One of my favorites A little boy and his mother are in a department store shopping one afternoon. The mother decides to try some clothes on and tells her son to wait outside the changing room for her. A few minutes later she walks out to find her son has his hand up the dress of a mannequin in the store. She quickly rushes over and slaps her sons hand exclaiming ""don't ever stick your hand up a girls dress!"" The boy seems confused and asks why. His mother explains that ""girls have teeth up there and you could lose a finger"" Never learning any different several years pass and the boy is now in his teens and has managed to get himself a girlfriend. After a couple months of making out with his girlfriend after school she one day asks him why he never puts his hand up her dress when they are kissing. The boy says ""are you crazy I'm not going to put my hand up your dress, you have teeth up there and I could lose a finger."" Confused the girl lifts up her dress to show him and says ""what are you talking about there aren't any teeth up there"" The boy takes a good long look and says ""Yeah...not with gums like those""