Ejaculation Stimulation 

A usual precursor to ejaculation is the sexual arousal of the male, leading to the erection of the penis, though not every arousal nor erection leads to ejaculation. Penile sexual stimulation during vaginal, oral or anal sexual intercourse, or manual stimulation might provide the necessary stimulus for a man to achieve orgasm & ejaculation. Men typically reach orgasm 5–10 minutes after the start of penile-vaginal intercourse, taking into account their desires & those of their partners. Most men could achieve orgasm sooner or delay it until later if they wished to do so. A prolonged stimulation either through foreplay or stroking leads to a good amount of arousal & production of pre-ejaculatory fluid. While the presence of sperm in pre-ejaculatory fluid is thought to be rare, sperm from an earlier ejaculation, still present in the urethra, might be picked up by pre-ejaculatory fluid. In addition, infectious agents often could be present in pre-ejaculate. Premature ejaculation is the phrase used when ejaculation occurs before the desired time. If a man is unable to ejaculate in a timely manner after prolonged sexual stimulation, in spite of his desire to do so, it is called delayed ejaculation or anorgasmia. An orgasm that is not accompanied by ejaculation is known as a dry orgasm.