A man walks into a bar and orders a beer. As he's sitting there enjoying his drink, he notices a sign hanging behind the bar that says, "If you can make the horse at the end of the bar laugh, you get free drinks for the whole night."
Intrigued, the man asks the bartender about the sign. The bartender explains that they have a horse in the back room who never seems to laugh, no matter what anyone does.
Determined to win free drinks, the man goes into the back room to meet the horse. He starts telling it jokes, doing funny dances, and even making funny faces, but the horse just stares back at him blankly.
Finally, in a last-ditch effort, the man whispers something in the horse's ear. Suddenly, the horse bursts out laughing uncontrollably, tears streaming down its face.
Amazed, the man goes back to the bartender and tells him that he made the horse laugh. True to their word, the bartender gives him free drinks for the whole night.
The man enjoys his drinks and as he's leaving, he can't resist asking the bartender what he said to the horse to make it laugh.
The bartender chuckles and says, "I told him that your jokes were funnier than mine!"