Two men are walking down the street. One of them turns to the other and says "as long as I've known you, you've been a cunt. And I know I'm not alone because everyone who's ever met you has said you're a cunt. And everyone who you will ever meet will say you're a cunt. In fact, you're the 2nd biggest cunt in the universe."
The second man's like "How come I'm only the 2nd biggest cunt?"
"Because you're a cunt."
Why does this joke work?