One day a horned-up gal tells a young lad that she wants him to put his penis into her vagina. The lad says, "No way! My mom told me you gals have teeth down there." The gal says, "That's the dumbest thing I've ever heard," and then peels up her dress and spreads her lips so he can see for himself. The lad replies, "No wonder you don't have any teeth, look at the shape your gums are in."