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Encyclopedia > Erection

The erection of the penis, clitoris or a nipple is its enlarged and firm state. It depends on a complex interaction of psychological, neural, vascular and endocrine factors. The ability to maintain the erectile state is key to the reproductive system and many forms of life could not reproduce in a natural way without this ability. The penis (plural penises, penes) is an external male sexual organ. ... The clitoris is a sexual organ that is present only in female mammals. ... This article is about the anatomical structure. ...

Contents

Penis erection

An uncircumcised penis flaccid with foreskin unretracted (left) and erect with foreskin retracted (right)
An uncircumcised penis flaccid with foreskin unretracted (left) and erect with foreskin retracted (right)

A penis erection occurs when two tubular structures that run the length of the penis, the corpora cavernosa, become engorged with venous blood. This may result from any of various physiological stimuli, also known as sexual arousal. The corpus spongiosum is a single tubular structure located just below the corpora cavernosa, which contains the urethra, through which urine and semen pass during urination and ejaculation, respectively. This may also become slightly engorged with blood, but less so than the corpora cavernosa. After a man has ejaculated during sexual encounter or masturbation, his erection usually ends, but this may take time depending on the length and thickness of the penis.[1] A corpus cavernosum is one of a pair of a sponge-like regions of erectile tissue which contain most of the blood in the male penis during erection. ... This article or section does not cite any references or sources. ... Corpus spongiosum (Plural: Corpora Spongiosa) is the mass of spongy tissue surrounding the male urethra within the penis. ... A corpus cavernosum is one of a pair of a sponge-like regions of erectile tissue which contain most of the blood in the male penis during erection. ... In anatomy, the urethra (from Greek ουρήθρα - ourethra) is a tube which connects the urinary bladder to the outside of the body. ... This article is about the urine of animals generally. ... Horse semen being collected for breeding purposes. ... Manneken Pis of Brussels. ... Ejaculation is the ejecting of semen from the penis, and is usually accompanied by orgasm. ... Woman masturbating, 1913 drawing by Gustav Klimt. ...


Penis erection usually results from exposure to sexual stimulation from sexual arousal, but can also occur by such causes as a full urinary bladder or spontaneously during the course of a day or at night, often during REM sleep (see "nocturnal penile tumescence"). An erection results in swelling, hardening and enlargement of the penis. Erection enables sexual intercourse and other sexual activities (sexual functions), though it is not essential for all sexual activities. An erection may also occur once woken up, called nocturnal penile tumescence. The scrotum may also become tightened during an erection. Turn on redirects here. ... This article is about the urinary bladder. ... In anatomy and physiology, nocturnal penile tumescence is the spontaneous occurrence of a penile erection during sleep in the absence of any sexual stimulation. ... It has been suggested that Duration of sexual intercourse be merged into this article or section. ... Sexual behavior is a form of physical intimacy that may be directed to reproduction (one possible goal of sexual intercourse) and/or to the enjoyment of activity involving sexual gratification. ... Sexual function is a medical term used when assessing sexuality (mainly human sexuality) in clinical context. ... In anatomy and physiology, nocturnal penile tumescence is the spontaneous occurrence of a penile erection during sleep in the absence of any sexual stimulation. ...

A circumcised penis flaccid (left) and erect (right).
A circumcised penis flaccid (left) and erect (right).

Image File history File links Download high-resolution version (1257x555, 572 KB) Example of a circumcised human penis in flaccid and erect states. ... Image File history File links Download high-resolution version (1257x555, 572 KB) Example of a circumcised human penis in flaccid and erect states. ...

Autonomic control

In the presence of mechanical stimulation, erection is initiated by the parasympathetic division of the autonomic nervous system (ANS) with minimal input from the central nervous system. Parasympathetic branches extend from the sacral plexus into the arteries supplying the erectile tissue; upon stimulation, these nerve branches initiate the release of nitric oxide, a vasodilating agent, in the target arteries. The arteries dilate, filling the corpora spongiosum and cavernosa with blood. Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation from the sympathetic division of the ANS causes constriction of the penile arteries, forcing blood out of the erectile tissue.[2] The cerebral cortex can initiate erection in the absence of direct mechanical stimulation (in response to visual, auditory, olfactory, imagined, or tactile stimuli) acting through erectile centers in the lumbar and sacral regions of the spinal cord. The cortex can suppress erection even in the presence of mechanical stimulation, as can other psychological, emotional, and environmental factors. The opposite term is detumescence. Anatomy and Physiology of the A.N.S. In contrast to the voluntary nervous system, the involuntary or autonomic nervous system is responsible for homeostasis, maintaining a relatively constant internal environment by controlling such involuntary functions as digestion, respiration, and metabolism, and by modulating blood pressure. ... This article or section is in need of attention from an expert on the subject. ... In human anatomy, the Sacral plexus refers to the nerve plexus emerging from the sacral vertebrae (S1-S4), and which provides nerves for the pelvis and lower limbs. ... Section of an artery An artery or arterial is also a class of highway. ... The blood vessels are part of the circulatory system and function to transport blood throughout the body. ... The Sympathetic Nervous System (SNS) is a branch of the autonomic nervous system. ... For other uses, see Cortex. ...


Shape and size

An erect penis can take on a number of different shapes and angles, ranging from a straight tube angled at a 45-90 degree angle, to a curvature to the left or right (see image), up or down. A tightly curved penis, known as Peyronie's disease, is identified by a severe curve in the erect penis. This may cause physical and psychological effects for the affected individual, which could include erectile dysfunction or pain during erection. Treatments include oral medication (such as Vitamin E) or surgery, which is most often reserved as a last resort. Peyronies disease is a connective tissue disorder involving the growth of fibrous plaques in the soft tissue of the penis affecting as many as 1-4% of men. ... Erectile dysfunction (ED) or impotence is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis. ...


Generally the size of an erect penis is fixed throughout post-pubescent life. Its size may be increased by surgery[3], although the procedure is controversial, and mostly the results are disappointing.[4] Penile enlargement is a controversial subject. See this wikipedia link Penis enlargement. Puberty refers to the process of physical changes by which a childs body becomes an adult body capable of reproduction. ... Penis enlargement procedures (sometimes euphemistically referred to as male enhancement procedures in spam email and television advertisements) are techniques alleged to make the human penis larger. ...


Erectile dysfunction

Main article: Erectile dysfunction

Erectile dysfunction (also known as ED or '(male) impotence') is a sexual dysfunction characterized by the inability to develop or maintain an erection.[5][6] It can occur due to both physiological and psychological reasons, most of which are amenable to treatment. Common physiological reasons include cardiovascular leakage and diabetes. Some drugs also may cause erectile dysfunction in patients who received them such as lithium, paroxetine, etc.[7][6] Erectile dysfunction (ED) or impotence is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis. ... Sexual dysfunction or sexual malfunction (see also sexual function) is difficulty during any stage of the sexual act (which includes desire, arousal, orgasm, and resolution) that prevents the individual or couple from enjoying sexual activity. ... Physiology (in Greek physis = nature and logos = word) is the study of the mechanical, physical, and biochemical functions of living organisms. ... Psychology (ancient Greek: psyche = soul and logos = word) is the study of mind, thought, and behaviour. ... The circulatory system or cardiovascular system is the organ system which circulates blood around the body of most animals. ... For the disease characterized by excretion of large amounts of very dilute urine, see diabetes insipidus. ... This article is about the chemical element. ... Paroxetine (Paxil, Seroxat, Pexeva) is a selective serotonin reuptake inhibitor (SSRI) antidepressant. ...


Erectile dysfunction, tied closely as it is to cultural notions of potency, success and masculinity, can have devastating psychological consequences including feelings of shame, loss or inadequacy[8]; often unnecessary since in most cases the matter can be helped. There is a strong culture of silence and inability to discuss the matter. In fact around 1 in 10 men will experience recurring impotence problems at some point in their lives.[9] Potency may refer to: Virility Lack of the above: Erectile dysfunction, Infertility or Effeminacy. ... Look up success in Wiktionary, the free dictionary. ... Manliness redirects here. ... For other uses, see Shame (disambiguation). ... Look up loss in Wiktionary, the free dictionary. ... Inadequacy can refer to the following: Sexual inadequacy is synonymous with sexual impotence. ... The expression conspiracy of silence, or culture of silence, relates to a condition or matter which is known to exist, but by tacit communal unspoken consensus is not talked about or acknowledged. ...


The study of erectile dysfunction within medicine is covered by andrology, a sub-field within urology.[10] Andrology (from the Greek andros, man) is the medical specialty that deals with male health, particularly relating to the problems of the male reproductive system and urological problems that are unique to men. ... This article or section is in need of attention from an expert on the subject. ...


Clitoral erection

Clitoral erection is a part of sexual arousal in women. The clitoris is the anatomically homologous counterpart of the penis, and the physiological mechanism of its erection is similar. Turn on redirects here. ... The clitoris is a sexual organ that is present only in female mammals. ...


Swelling and enlargement may also occur during a clitoral erection but because a large proportion of the clitoris is within the body and its drastically reduced size, it is often not as obvious.


Nipple erection

Human female nipple in erect state.
Human female nipple in erect state.

Nipple erection may result from three kinds of response. It happens in females during breast feeding. It is also an early part of the sexual response in females and males. Both of these are caused by the release of oxytocin. Nipple erection can also be caused by a tactile response to cold temperature in both males and females. The erection of nipples is not due to erectile tissue, but due to the contraction of smooth muscle under the control of the autonomic nervous system. It is more akin to a hair follicle standing on end than to a sexual erection. Image File history File linksMetadata Female_nipple_profile. ... Image File history File linksMetadata Female_nipple_profile. ... A breastfeeding infant Breastfeeding is the practice of a woman feeding an infant (or sometimes a toddler or a young child) with milk produced from her mammary glands, usually directly from the nipples. ... Oxytocin (Greek: quick birth) is a mammalian hormone that also acts as a neurotransmitter in the brain. ... Erectile tissue is tissue in the body that can become erect, usually by becoming engorged with blood. ... Smooth muscle Layers of Esophageal Wall: 1. ... This article or section is in need of attention from an expert on the subject. ... A hair follicle is part of the skin that grows hair by packing old cells together. ...


See also

Priapism (Ancient Greek: ) is a potentially harmful medical condition in which the erect penis does not return to its flaccid state (despite the absence of both physical and psychological stimulation) within about four hours. ... Sexual function is a medical term used when assessing sexuality (mainly human sexuality) in clinical context. ... A death erection or terminal erection[1] is a post-mortem erection, technically a priapism, observed in the corpses of human males who have been executed, particularly by hanging. ... In anatomy and physiology, nocturnal penile tumescence is the spontaneous occurrence of a penile erection during sleep in the absence of any sexual stimulation. ...

References

  1. ^ Harris, Robie H. (et al.), It's Perfectly Normal: Changing Bodies, Growing Up, Sex And Sexual Health. Boston, 1994. (ISBN 1-56402-199-8)
  2. ^ Drake, Richard, Wayne Vogl and Adam Mitchell, Grey's Anatomy for Students. Philadelphia, 2004. (ISBN 0-443-06612-4)
  3. ^ Li CY, Kayes O, Kell PD, Christopher N, Minhas S, Ralph DJ (2006). "Penile suspensory ligament division for penile augmentation: indications and results". Eur. Urol. 49 (4): 729–33. doi:10.1016/j.eururo.2006.01.020. PMID 16473458. 
  4. ^ Fox News. Most Men Unsatisfied With Penis Enlargement Results. (September 2006).
  5. ^ Milsten, Richard (et al.), The Sexual Male. Problems And Solutions. London, 2000. (ISBN 0-393-32127-4)
  6. ^ a b Sadeghipour H, Ghasemi M, Ebrahimi F, Dehpour AR (2007). "Effect of lithium on endothelium-dependent and neurogenic relaxation of rat corpus cavernosum: role of nitric oxide pathway". Nitric Oxide 16 (1): 54–63. doi:10.1016/j.niox.2006.05.004. PMID 16828320. 
  7. ^ Sadeghipour H, Ghasemi M, Nobakht M, Ebrahimi F, Dehpour AR (2007). "Effect of chronic lithium administration on endothelium-dependent relaxation of rat corpus cavernosum: the role of nitric oxide and cyclooxygenase pathways". BJU Int. 99 (1): 177–82. doi:10.1111/j.1464-410X.2006.06530.x. PMID 17034495. 
  8. ^ Tanagho, Emil A. (et al.), Smith's General Urology. London, 2000. (ISBN 0-8385-8607-4)
  9. ^ http://www.nhsdirect.nhs.uk/articles/article.aspx?articleId=210 NHS Direct - Health encyclopaedia -Erectile dysfunction]
  10. ^ Williams, Warwick, It's Up To You: Overcoming Erection Problems. London, 1989. (ISBN 0-7225-1915-X)
A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ... A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ... A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ... This article or section does not cite its references or sources. ... It has been suggested that Duration of sexual intercourse be merged into this article or section. ... This article does not cite any references or sources. ... This list of sex positions includes descriptions of various forms of sexual intercourse and other sexual acts between people. ... Oral sex consists of all sexual activities that involve the use of the mouth, which may include use of the tongue, teeth, and throat, to stimulate genitalia. ... Roman men having anal sex. ... A person performing anilingus. ... Peter Fendi, 1835 Carvings at Khajuraho, an ancient Hindu Temple near Delhi, India This content has an uncertain copyright status and is pending deletion. ... Sexual sublimation, also known as sexual transmutation, is a method used to reportedly transform the sexual energy into higher creative outlets in order to faciliate spiritual awakening. ... Bareback is a term that originated in gay slang to describe acts of unprotected sex, especially anal sex. ... Saucy Postcard 1905 - 1915 Dirty talk is a dysphemism for a lovers practice of using graphic word imagery to heighten sexual pleasure before and during the sex act. ... In a sexual context, a facial or facial cumshot is the slang term for the sexual activity in which one person directs an ejaculation of semen onto the face of another person, often following oral sex, intercourse, or other stimulation. ... For other uses, see Fingering (disambiguation). ... Fisting or fist fucking (FF) is a sexual activity that involves inserting the hand and forearm into the vagina or anus. ... Woman masturbating, 1913 drawing by Gustav Klimt. ... Johann Nepomuk Geiger, watercolor, 1840. ... Non-penetrative sex (also known as outercourse) is sexual activity without vaginal, anal, and possibly oral penetration, as opposed to intercourse. ... It has been suggested that this article or section be merged into Intercrural sex. ... Adult entertainment is entertainment restricted from people under a specified age in by a community, religious group, or government. ... An artificial vagina used to collect semen from horses for use in artificial insemination An artificial vagina is a device designed to simulate the female sex organ. ... For other uses, see Dildo (disambiguation). ... This article does not cite any references or sources. ... Personal lubricants are specialized lubricants which serve to reduce friction with the vagina, the anus, or other body parts. ... A spanking paddle is a usually wooden instrument with a long, flat face and narrow neck, so called because it is roughly shaped like the homonymous piece of sports equipment, but existing in more varied sizes and dimensions, (length, width and thickness) used to administer a spanking to the buttocks... Porn redirects here. ... Sex dolls should not be confused with anatomically precise dolls. ... A sex toy is a term for any object or device that is primarily used in facilitating human sexual pleasure. ... Front window of a Tokyo sex shop advertising adult toys A sex shop is a shop that sells products such as sex toys, pornography, erotic lingerie, erotic books, and safer sex products such as condoms and dental dams. ... Adult video games are video games which have significant sexual content (like adult movies), and are therefore intended for an adult audience. ... For other uses, see Birth control (disambiguation). ... Erectile dysfunction (ED) or impotence is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis. ... The shamefulness associated with the examination of female genitalia has long inhibited the science of gynaecology. ... Satyriasis redirects here. ... Sexual dysfunction or sexual malfunction (see also sexual function) is difficulty during any stage of the sexual act (which includes desire, arousal, orgasm, and resolution) that prevents the individual or couple from enjoying sexual activity. ... An early 20th century post card documents the problem of unwanted pregnancy. ... A sexually transmitted disease (STD) or venereal disease (VD), is an illness that has a significant probability of transmission between humans or animals by means of sexual contact, including vaginal intercourse, oral sex, and anal sex. ... This article or section includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ... Roman oil lamp depicting coitus more ferarum Erotic depictions include paintings, sculpture, photographs, dramatic arts, music and writings that show scenes of a sexual nature. ... For the Macy Gray song, see Sexual Revolution (song). ... Sexual identity is a term that, like sex, has two distinctively different meanings. ... Sexual orientation refers to an enduring emotional, romantic, sexual, or affectional attraction toward others,[1] usually conceived of as classifiable according to the sex or gender of the persons whom the individual finds sexually attractive. ... This article or section does not cite its references or sources. ... Age of consent laws Worldwide While the phrase age of consent typically does not appear in legal statutes,[1] when used with reference to criminal law the age of consent is the minimum age at which a person is considered to be capable of legally giving informed consent to any... Obscenity in Latin obscenus, meaning foul, repulsive, detestable, (possibly derived from ob caenum, literally from filth). The term is most often used in a legal context to describe expressions (words, images, actions) that offend the prevalent sexual morality of the time. ... This article is about a form of sexual violence. ... Bad Touch redirects here. ... Sexual harassment is harassment or unwelcome attention of a sexual nature. ... Ejaculation is the ejecting of semen from the penis, and is usually accompanied by orgasm. ... Insemination is the introduction of semen into the genital tract of a female. ... An orgasm (sexual climax) is the conclusion of the plateau phase of the sexual response cycle, and may be experienced by both males and females. ... This article is about human pregnancy in biological females. ... Turn on redirects here. ... Collars are a commonly used symbol of BDSM and can be ornamental or functional. ... Incest is defined as sexual relations between closely related persons (often within the immediate family) such that it is either illegal or socially taboo. ... Matrimony redirects here. ... Look up paraphilia in Wiktionary, the free dictionary. ... Whore redirects here. ... For other uses, see Religion and sexuality (disambiguation). ... Romance is a general term that refers to an intimate and often sexual relationship between two people. ... Sexual abstinence is the practice of voluntarily refraining from some or all aspects of sexual activity. ... In a species that reproduces sexually, sexual attraction is an attraction to other members of the same species for sexual or erotic activity. ... Sexual ethics is a sub-category of ethics that pertain to acts falling within the broad spectrum of human sexual behavior, sexual intercourse in particular. ... Sexual objectification is objectification of a person. ... A sex surrogate is a member of a sex therapy team who will engage in intimate physical and often sexual relations with a client. ... Sex tourism is travel to engage in sexual intercourse or sexual activity with prostitutes, and is typically undertaken internationally by tourists from wealthier countries. ... This article is about sexual practices (i. ... This article is about human sexual perceptions. ... Sexology is the systematic study of human sexuality. ... Sexual slang is any slang term which makes reference to sex, the sexual organs, or matters closely related to them. ... Human Physiology is the science of the mechanical, physical, and biochemical functions of humans in good health, their organs, and the cells of which they are composed. ... Endocrinology is a branch of medicine dealing with disorders of the endocrine system and its specific secretions called hormones. ... Sexual reproduction is characterized by processes that pass a combination of genetic material to offspring, resulting in diversity. ... -1... The male reproductive system is a series of organs located outside of the body and around the pelvic region of a male. ... The human females reproductive system. ... Menstrual cycle In the female reproductive system, the menstrual cycle is a recurring cycle of physiologic changes that occurs in reproductive-age females. ... The estrous cycle (also oestrous cycle; originally derived from Latin oestrus) comprises the recurring physiologic changes that are induced by reproductive hormones in most mammalian placental females. ... Not to be confused with Mensuration. ... Menstrual cycle The follicular phase (or proliferative phase) is the phase of the estrous cycle, (or, in humans and great apes, the menstrual cycle) during which follicles in the ovary mature. ... Ovulation is the process in the menstrual cycle by which a mature ovarian follicle ruptures and discharges an ovum (also known as an oocyte, female gamete, or casually, an egg) that participates in reproduction. ... The luteal phase is the latter phase of the estrous cycle in animals. ... Gametogenesis is the creation of gametes by meiotic division of gametocytes into various gametes. ... Cross section of the epithelium of a seminiferous tubule showing various stages of spermatocyte development Spermatogenesis is the process by which male spermatogonia develop into mature spermatozoa. ... A Spermatogonium (plural: spermatogonia) is an intermediary male gametogonium (a kind of germ cell) in the production of spermatozoa. ... Spermatogenesis refers to the creation, or genesis, of sperm cells, which occurs in the male gonads or testes. ... The term spermatid refers to the haploid male germ cell that results from secondary spermatocyte division. ... For other uses, see Sperm (disambiguation). ... Oogenesis or rarely oögenesis is the creation of an ovum (egg cell). ... An oogonium is a female gametogonium. ... An oocyte or ovocyte is a female gametocyte or germ cell involved in reproduction. ... An ootid is a female gametid, as opposed to a male spermatid. ... A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ... A germ cell is part of the germline and is involved in the reproduction of organisms. ... A gamete (from Ancient Greek γαμετης; translated gamete = wife, gametes = husband) is a cell that fuses with another gamete during fertilization (conception) in organisms that reproduce sexually. ... This article is about sexual practices (i. ... It has been suggested that Duration of sexual intercourse be merged into this article or section. ... Ejaculation is the ejecting of semen from the penis, and is usually accompanied by orgasm. ... An orgasm (sexual climax) is the conclusion of the plateau phase of the sexual response cycle, and may be experienced by both males and females. ... Insemination is the introduction of semen into the genital tract of a female. ... This article is about fertilisation in animals and plants. ... Fertility is the natural capability of giving life. ... Masturbation is the manual excitation of the sexual organs, most often to the point of orgasm. ... This article is about human pregnancy in biological females. ... This article does not cite any references or sources. ... This article is about prenatal development in humans. ... Female (left) and male Common Pheasant, illustrating the dramatic difference in both color and size, between the sexes Sexual dimorphism is the systematic difference in form between individuals of different sex in the same species. ... This article is about the development of sexual dimorphisms in humans. ... Puberty refers to the process of physical changes by which a childs body becomes an adult body capable of reproduction. ... Menarche (IPA: ) is the first menstrual period, or first menstrual bleeding in the females of human beings. ... Adrenarche refers to a stage of maturation of the cortex of the human adrenal glands. ... Graph showing increased risk of Down Syndrome over time The maternal age effect describes the exponentially increasing risks of chromosomal abnormalities as a prospective mother ages. ... The paternal age effect describes the influence that a fathers age has on the chances of conferring a genetic defect to his offspring. ... The word menopause literally means the permanent physiological, or natural, cessation of menstrual cycles, from the Greek roots meno (month) and pausis (a pause, a cessation). ... Andropause is a medical phenomenon, similar to the female menopause, that can affect men between the ages of 40 and 55. ... A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ... Oviparous animals are animals that lay eggs, with little or no other embryonic development within the mother. ... Ovoviviparous animals develop within eggs that remain within the mothers body up until they hatch or are about to hatch. ... Poa alpina, a grass which shows vivipary: the seeds germinate while still attached to the mother plant. ... Reproductive endocrinology (RE) is a medical subspecialty that addresses hormonal functioning as it pertains to reproduction. ... The hypothalamic-pituitary-gonadal axis (also HPTA) is a way of referring to the combined effects of the hypothalamus, pituitary gland, and gonads as if these individual endocrine glands were a single entity. ... Andrology (from the Greek andros, man) is the medical specialty that deals with male health, particularly relating to the problems of the male reproductive system and urological problems that are unique to men. ... For other uses, see Hormone (disambiguation). ...

  Results from FactBites:
 
Erection Physiology (252 words)
Erections are brought about through the parasympathetic nervous system when the penis, or other erogenous zones, are touched.
Having an erection upon wakening in the morning is an example of this phenomenon.
Once triggered, the reflex begins with the movement of sperm from the epididymis (e) (where sperm is stored after being made in the testicle) to the vas deferens (vas).
Urban Dictionary: erection (464 words)
Erections are also obtained during sex when fooling around with the opposite gender.
Some men get an erection over another man ; this is the sure sign of being gay.
Description 1 : The man got an erection after looking at a semi-naked woman who was sucking her finger seductively.
  More results at FactBites »

 
 

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