well its either your a guy and its your penis, or your a girl and its your boobs/vagina. we all know when you put like you did in this question....... well stop being paranoid, if you get a cut on your forearm is it going to make you have huge muscles? if someone punches you in the stomach it won't make you fatter or taller. theres no difference between your other body parts and this body part. use more common sense whenever the wave of fear comes crashin' down.