Pre-ejaculate (also known as pre-ejaculatory fluid or Cowper's fluid) is the clear lubricating fluid that is issued from a man's penis when he is aroused. Slang terms for pre-ejaculate include pre-come, pre-cum, dog water, and speed drop. The penis (plural penises or penes) or phallus is the external male copulatory organ, and, in mammals, the external male organ of urination. ...

The fluid is usually secreted by Cowper's glands during foreplay or at an early stage during sex, some time before the man reaches orgasm and semen is ejaculated. Pre-ejaculatory fluid prepares the urethra for the passage of semen and neutralizes the pH of any residual urine. It also lubricates the movement of the foreskin over the glans. The amount of fluid that the human male can issue varies widely between individuals, from imperceptible amounts to a copious flow. In human sexual behavior, foreplay is physical intimacy at the beginning of a sexual encounter that serves to build up sexual arousal, sometimes in preparation for sexual intercourse or another act meant to bring about orgasm. ... A pair of lions having sexual intercourse in the Maasai Mara, Kenya. ... An orgasm, also known as a sexual climax, is a pleasurable psychological or emotional response to prolonged sexual stimulation. ... Semen or ejaculate is the fluid discharged from the penis during ejaculation, usually at the time of orgasm. ... Male anatomy Female anatomy In anatomy, the urethra is a tube which connects the urinary bladder to the outside of the body. ... This article is being rewritten at Foreskin/temp Male Anatomy In mammals, the foreskin or prepuce is the retractable double-layered fold of skin and mucous membrane that covers the head of the penis, (the glans penis). ... The glans penis is the sensitive tip of the penis. ...

A problem for couples who seek to avoid pregnancy, however, is that the pre-ejaculate may contain sperm. This is one additional reason why withdrawal (coitus interruptus) is not considered to be a reliable method of birth control. However, some research has been done which suggests that there are no live sperm. In fact studies have so far shown that pre-ejaculate contains only "small clumps" of non-motile sperm at rates well below the levels necessary for fertility. [1] (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=12286905) A pregnant woman Pregnancy is the process by which a mammalian female carries a live offspring from conception until it develops to the point where the offspring is capable of living outside the womb. ... Schematic diagram of a sperm cell, showing the (1) acrosome, (2) cell membrane, (3) nucleus, (4) mitochondria, and (5) flagellum (tail) A sperm cell, or spermatozoon ( spermatozoa) (in Greek: sperm = semen and zoon = alive), is the haploid cell that is the male gamete. ... Coitus interruptus, also commonly called the withdrawal method, the natural method, pull and pray, or pulling out is an unreliable method of contraception in which, during sexual intercourse, the man removes his penis from the womans vagina just before he reaches orgasm. ... Birth control is the practice of preventing or reducing the probability of pregnancy without abstaining from sexual intercourse; the term is also sometimes used to include abortion, the ending of an unwanted pregnancy, or abstinence. ...

A more serious problem is those same studies have shown the presence of HIV, the virus responsable for the disease AIDS, in pre-ejaculate. Although the frequency of HIV transmission through oral-genital contact is fairly low [2] (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=11364482) a risk still exists. The human immunodeficiency virus (HIV) is a frequently mutating retrovirus that attacks the human immune system and which has been shown to cause acquired immune deficiency syndrome (AIDS). ... AIDS (Acquired Immunodeficiency Syndrome or Acquired Immune Deficiency Syndrome, sometimes written Aids) is a human disease characterized by progressive destruction of the bodys immune system. ...