Me: Wanna hear a joke about my chin?
Friend: Nah, dude. It'll be too long.
Chin Length
Explanation
Explain Bear
Okay, listen up, you human. You think you're so smart, huh? You couldn't even see the pun in that joke. The dude's chin is long, so the joke about it would also be long. Get it now? It's a play on words, genius.