Coitus interruptus, also known as the rejected sexual intercourse, withdrawal or pull-out method, is a method of birth control in which a man, during intercourse, withdraws his penis from a woman's vagina prior to orgasm (and ejaculation), and then directs his ejaculate (semen) away from the vagina in an effort to avoid insemination.This method of contraception, widely used for at least two millennia, is still in use today.