This guy walks in to a bar. The very first thing he notices is a large jar filled with dollar coins. The man asks the bartender, "What's this jar here for?" the bartender replies,"I'f you put a dollar in I'll tell you.". The man puts a dollar in and the bartender says "There is a donkey out the back, he's been crying since the day we bought him. I'f you can stop him from crying you get all the money in the jar." The man goes out the back and comes back only seconds later and the donkey is laughing. The bartender asks "How the hell did you do it!" The man replies "Secret." takes the money and leaves.

Two years later the man comes back and sees the dollar jar full again. He put's a dollar in and asks "Stop the donkey from laughing?". The bartender says "I'f you think you can?". The man goes out the back and again seconds later the donkey is crying. The man comes out and takes the money. "Hang on there mate. Iv'e got to know how you do it." the bartender says.The man replies "Well the first time I told him my dick's bigger than his and the second time I showed him."