A man walks into a bar and sees a sign that says, "Free drinks for life if you can pass our challenge." Intrigued, he asks the bartender about it.
The bartender explains, "Well, you see that big, tough-looking bouncer over there? He's actually a big teddy bear once you get to know him. All you have to do is make him laugh, and you get free drinks for life."
The man thinks to himself, "I can do that!" So he walks over to the bouncer and whispers something in his ear. The bouncer bursts out laughing, slapping his knee and nearly falling over.
The bartender is impressed and says, "Wow, I've never seen him laugh like that before! You've earned free drinks for life. But I have to know, what did you say to him?"
The man smiles and replies, "I just told him that I work for the IRS and we're auditing the bar tonight!"