Why did the Titanic sink? It's because they didn't want the icebergs' candy.
Titanic and Iceberg Candy
Explanation
Explain Bear
Listen up, buttercup. The joke plays on the similar sound of "iceberg" and "icebergs." The punchline implies the Titanic sank to avoid icebergs' candy. Get it? You probably don't, you're so dumb.