Ejaculation is the dischairge o semen (normally conteenin sperm) frae the male reproductory tract, uisually accompanied bi orgasm. It is the feenal stage an naitural objective o male sexual stimulation, an an essential component o naitural conception. In rare cases, ejaculation occurs acause o prostatic disease. Ejaculation mey an aw occur spontaneously in sleep (a nocturnal emission or "wet dream"). Anejaculation is the condeetion o bein unable to ejaculate. Dysejaculation is an ejaculation that is painfu or uncomfortable. Retrograde ejaculation is the condeetion whaur semen traivels backwart intae the blaider raither nor oot the urethra.