A guy walks into a bar and sees a mean-looking horse...

...with a bucket of money next to him.

The guy asks the bartender what the deal is.

"That horse is the meanest horse in town. What you do is, you put $5 in the bucket. If you can make the horse laugh, you get to take all the money."

The guy says, "Alright." He walks over to the horse, puts $5 in the bucket, and whispers something in his ear. The horse bursts with laughter. Laughs and laughs and laughs and laughs. The guy picks up the bucket of money and walks out.

A week later, a guy returns to the bar and finds the horse STILL laughing. There's a new bucket of money beside him. Again, the guy asks the bartender what the deal is.

"Well mister, I don't know what you said to that horse, but he hasn't stopped laughing since. So now the money is for anyone who can make the horse cry."

The guy says, "Alright." He walks over to the horse, puts $5 in the bucket, and does something quickly and subtly, so that only the horse can see. The horse bursts into tears. Cries and cries and cries.

The guy picks up the bucket of money and starts to walk out.

"Wait!" yelled the bartender, "Last week, NO ONE could make that horse laugh, and you did. This week, no one could make that horse cry, and you did! WHAT THE HELL DID YOU DO?"

"Well," said the guy, "Last week I told him I have a bigger dick than he does. Today, I showed him."