A man walks into a bar and sees a sign that says, "Free drinks for anyone who can make the horse laugh." The man thinks to himself, "I can do that," so he walks up to the horse and whispers something in its ear. The horse bursts out laughing and the bartender gives the man a free drink.
The next day, the man walks into the bar again and sees a new sign that says, "Free drinks for anyone who can make the horse cry." The man thinks for a moment and then goes up to the horse and whispers something in its ear. The horse starts bawling and the bartender gives the man another free drink.
On the third day, the man walks into the bar and sees a sign that says, "Free drinks for anyone who can make the horse stop crying." The man walks up to the horse and whispers something in its ear. The horse stops crying and starts laughing uncontrollably.
The bartender, amazed by this man's talent, asks him how he was able to make the horse laugh, cry, and then stop crying. The man replies, "Well, yesterday I told the horse that my dick is bigger than his. Today, I showed him."