The jar on the bar.

A man walks into a bar and orders a drink. He notices a big pickle jar full of $10 bills and asks the bartender "what's with the jar?" The bartender points out the window and says "you see that horse in the pen? If you can make him laugh, you get all the money in the jar." The man slammed his drink, threw a $10 in the jar, and walked out to the horse. He looked around and whispered in the horses ear. Almost immediately the hose began laughing hysterically! The man walked back in, tucked the jar under his arm, and walked out.
A month later the man returned to the bar for a drink. He sits down and sees a big pickle jar full of $20s this time. He asks the bartender about the jar and the bartender replies "ok, smart ass. If you make the horse laugh AND cry this time, you get the money." The man slammed his drink, threw a $20 in the jar, and walked out to the horse. Again he looked around and whispered in the horses ear and, again, the horse lost it. Then the man faced the horse and it erupted into a terrible, tearful sob. The man walked back in for his jar and was stopped by the bartender demanding an explanation. "Well" the man said "first, I told him I had a bigger dick....then I proved it."