A trucker was driving through Texas when he saw a billboard advertising a chance to win $20,000. Being curious & broke, he pulled into the place & asked the proprietor what he had to do to win. "Well," the proprietor drawled, "All ye gotta do is make the mule laugh." And with that, he pointed towards the barn where the mule was looking out of his stall.
The trucker says he'll give it a shot, but he needs a few moments alone with the mule. The proprietor doesn't see a problem & lets the trucker lead the mule into the barn; about 15 seconds later there is a loud laughing coming from the barn & the proprietor comes running in to see what's going on.
He sees the mule laughing uncontrollably, he's laughing so hard, there are tears rolling down his cheeks. The owner is completely flabbergasted, but pays the trucker $20,000.
a couple days later, on the way back, the trucker sees the same sign & pulls in to the place again. The mule's owner recognizes him & when the trucker asks if he has to make the mule laugh again, the owner says "No, this time you have to make the mule cry."
The trucker thinks about this for a few seconds & says he'll give it a shot, but he needs a few moments alone with the mule. The owner is suspicious, but allows it again. Pretty soon, the owner hears uncontrollable sobbing coming from the barn & when he walks in, sure enough, the mule is crying his eyes out.
The owner is devastated. He reluctantly pays the trucker another $20,000 & says "Mister, you got $40,000 of my money, I'm broke now; but I gotta know how you did it."
The trucker stuffs the money into his overalls & replies "Well, the 1st time, when I had to make the mule laugh, I just told him my d!ck was bigger than his...
The second time, I showed him."