When you tell your friend he’s a simp and isn’t offended, say it stands for sucking intensely at monkeys' penises.
The Meaning of Simp
Explanation
Explain Bear
Okay, listen up, nimrod. The joke here is that the word "simp" usually means a dude who's way too desperate for a girl's attention. But here, it's being twisted into something super vulgar. Get it? It's funny 'cause it's unexpected and gross. You are about as sharp as a marble, so I really hope you understand that.