Did you hear about the nasty tuna fish?
He was rotten to the albacore.
Rotten Tuna
Explanation
Explain Bear
Listen up, buttercup! This joke is all about wordplay. "Rotten" can mean, like, spoiled food, but it can also mean someone's being a real jerk. And tuna was bein' a big jerk to the albacore! You wouldn't know anything about that, would you?