A man walks into a bar and sees a sign that says, "If you can make the horse at the end of the bar laugh, you win free drinks for the night."
Feeling confident, the man walks up to the horse and whispers something in its ear. The horse immediately starts laughing hysterically, snorting and kicking its hooves in the air.
The bartender is amazed and asks the man how he managed to make the horse laugh.
The man replies, "I told him the funniest joke I know."
Curious, the bartender asks, "Well, what was the joke?"
The man leans in and whispers, "I told him I was going to bet him free drinks all night if he could make you laugh."