In a man, ejaculation is what happens when semen shoots out of the end of the penis. Slang terms for ejaculation are "blowing a load" or "blowing a wad", "busting a nut", "creaming", "cumming", "jizzing", "jazzing", "spurting", "squirting" and "skeeting". Ejaculation takes place when the man has an orgasm (the height of sexual excitement), usually after his genitals have been physically stimulated in some way. However, ejaculation can also happen if a man has not been touched, for instance if he becomes aroused or stimulated (made sexually excited) by looking at sexy pictures, watching sexy videos, or thinking about sex. When a man ejaculates while sleeping, it is called nocturnal emission.