Joke: Tame Alligator-Fool joke

A guy walks into a bar with an alligator on a leash. The bartender tells the man that he cannot bring such a dangerous animal into the bar. The man assures him that the gator is completely tame and offers a demonstration. He opens the gator's mouth, places his penis inside and closes it. He then beats the alligator on the head with a stick. Then, he gently opens the gator's mouth, removes his penis and shows it to the crowd. There wasn't a scratch on it. He turns and says, "Now would anyone else like to try?" 

A little old women raises her hand and says, "Yes I would, but please don't hit me on the head with the stick."