Alligator

A man limps into a bar with a cane and alligator. The bartender stops him and says "Hold on a second here - you can't bring that animal in here, they aren't allowed!" So the man says, "But my gator here does a really cool trick..."

The bartender says "Well then, lets see!" So the man whips out his dick and shoves it in the gators mouth. He then takes his cane and starts bashing the gator in the head with it. A crowd gathers around and everyone is astonished when he pulls out his dick without a single scratch.

He looks around at the crowd and says, "Does anyone else want to try?" An old lady raises her hand and says..."Sure, but don't hit me with that stick."