>>81713109 (OP)First of all, porn-addicted retard, dick size has nothing to do with fucking a fat-assed girl. The asscheeks sit just above your groin when you're banging her, you're not "piercing" the buttocks with your cock.
Even if you're fucking her doggystyle, you spread the buttocks apart. If we go with your logic, even a 12-inch dick wouldn't be enough for a big assed girl.