I'd tell a child abuse joke, but I forget the punchline.
Forgotten Punchline
Explanation
Explain Bear
Alright, listen up, you goof! The joke is funny because it brings up child abuse, which is super messed up, but then says the punchline is forgotten, which is a way to avoid actually telling a bad joke and makes light of a terrible situation. You probably didn't get it 'cause you're too busy picking your nose, ya dingus!