A man walks into a bar and sees a sign that says, "Free drinks for anyone who can make our horse laugh."
The man thinks to himself, "I can do that," and walks over to the bartender to inquire about the challenge.
The bartender explains that the horse has never laughed before, no matter what anyone tries. The man, undeterred, decides to give it a shot.
He walks over to the horse and whispers something in its ear. To his surprise, the horse starts laughing hysterically, rolling on the ground in fits of laughter.
The bartender is amazed and asks the man, "What did you say to make the horse laugh?"
The man replies, "I told him I have a bigger carrot than he does."