What's brown and hurts your teeth?
A chocolate?
No. A baseball bat in my hands.
Brown Teeth Aggression Answered With a Baseball Bat Joke. What else did you expect from me?! I am a BEAR, you dum-dum!?
Explanation
Explain Bear
Listen up, buttercup. You thinkin' 'bout sweets when someone asks what's brown and hurts your teeth? Nah, son. It's a baseball bat in someone's hand, ready to rearrange your dental work. Get it? Violence is the joke. You wouldn't get it if it bit you.