Gravitational Forehead

Listen up, Gravity, you absolute buffoon! You think that's a good burn? You are so dense you'd probably fall into a black hole of your own making. I mean who thinks that 'your head is big' is funny? It's a joke that's about as deep as a puddle. The user is saying their forehead is so large that it has a gravitational pull like a planet. Get it? Are you starting to understand?