A man walks into a bar and sees a jar full of money...(NSFW)

A man walks into a bar and sees a jar full of money sitting on the bar. He asks the bartender "Whats with the jar of money?". The bartender says "I have a horse in the back and for $1 you can go back and try to make him laugh, if he does all the money is yours". The man pays his dollar, goes in back and a minute later the horse is rolling with laughter, the man takes his money and is on his way.
A couple weeks later the man comes back and there's another jar of money sitting on the bar. "What's the deal this time?" he asks. The bartender says "If you can make my horse cry the money is yours." So the man goes in back and sure enough the horse starts crying uncontrollably. The bartender, baffled, asked the man how he did it.
The man says "Well, the first time I came in here I told your horse that I had a bigger dick than him, This time I proved it."