Birth control
Coitus interruptus (sometimes called "withdrawal" or "pulling out"– when the man takes his penis out of the woman's vagina before semen (liquid that has sperm in it) comes out. This is not a good method of birth control because the fluid that comes out before semen comes out also has sperm in it, and because if the man's semen is close to the woman's vagina, she can still get pregnant. Also, because the man's instinct is to stay inside the woman's vagina when he ejaculates, there is always a danger that he may not withdraw his penis in time. Even when it works, this can be a very frustrating method for both the man and woman because it interrupts their closeness and good feelings at the climax of intercourse.