A certain bartender decided to try to get a few new customers into his bar
by starting a gimmick involving a horse. His claim was that if anyone could
get the horse to laugh, he would give them drinks on the house. The idea
worked well and business improved until one night a young man walked in and
whispered in the horse's ear. The horse immediately burst into hysterical
laughter and the man won the contest. The next night the same thing
happened: the man whispered in the horse's ear and the horse burst out
laughing. The next night, the bartender decided to change the rules. Now,
a person had to get the horse to cry in order to win the drinks on the
house. Later on that night, the same guy came in and said "Can I take the
horse into the bathroom for a minute? I promise I'll make him cry." The
bartender agreed and sure enough, when the man came out leading the horse,
the horse was crying his eyes out. The bartender could take it no more and
said, "How did you make him laugh the other two nights?"
"I told him that my dick was bigger than his", replied the man.
"How did you make him cry tonight?"
"I proved it."