Jar of money

A guy walks into a bar and sees a jar of money so he asks the bartender about it. "Well i got a horse out back and if you can make him laugh you get the money" The man agrees to the challenge goes out back and a short while later the horse is laughing its ass off. He takes the money and leaves saying nothing.

A couple weeks later he comes back to see another jar and asks the bartender if its the same deal "Sort of, only this time you got to make my horse cry." Again he agrees to the challenge and again doesn't take him long before the horse is on the ground crying like a baby. He grabs the jar but before he leaves the bartender stops him "Hey man you gotta tell me, how did you do it?" "Well the first time i made him laugh by telling him i had a bigger dick then he did, i made him cry by proving it"