Upon setting down at the bar, a man notices a jar full of money. After he orders his drink, he asks the bartender the purpose of the money. The bartender stated that whomever could make the old mule out back of the bar laugh got the jar of money.

The man shook his head and continued to drink. After the 9th or 10th round he asks the bartender where the mule was. The bartender showed him to the back door and the man walked out.

About a minute later the whole bar went silent as they heard the mule laughing hysterically. The man re-entered the bar, claimed his money, and went on his way.

A few months later the man returned to the same bar wher sat another jar of cash. the man again inquired of the bartender the purpose of the money. This time it was to make the mule cry.

The man sat at the bar and sipped his beer for a moment then walked out back to the mule. Within seconds you could hear the mule sobbing and crying. The man came in and grabbed the jar.
The bartender, amazed, stopped the man and asked what he had done to make the mle laugh. The man said, "I told him my penis was bigger than his."

The bartender was perplexed and proceeded to ask how did he make the mule cry, to which the man responded,
"I showed it to him!"