Why did the butt smell so bad? Because he didn’t have a nose! AND HE FARTED TOO!
The Butt's Bad Smell
Explanation
Explain Bear
Listen up, buttercup. So, the joke is that a butt smells bad because it doesn't have a nose to smell with. And then, BAM, the joke hits you with the fact that the butt also farted! Farts stink, and so does the joke. You got that, genius?