A man walks into a bar and orders a drink. As he's sitting there enjoying his beverage, he notices a sign behind the bar that says, "Free drinks for life if you can make the horse laugh."
Intrigued, the man asks the bartender about the sign. The bartender explains that they have a horse out back that never laughs, no matter what anyone does to try and make it laugh. The man decides to give it a shot and walks out back to where the horse is kept.
He spends hours trying everything he can think of to make the horse laugh – telling jokes, doing silly dances, even making funny faces. But no matter what he does, the horse just stands there, stoic and unamused.
Finally, the man gives up and goes back inside to the bar. The bartender asks him if he was able to make the horse laugh, to which the man replies, "No, I couldn't do it. But I did manage to make the chicken out back crack up!"
Confused, the bartender asks how he made the chicken laugh. The man replies, "I told him I would pay him in corn if he could get the horse to laugh!"