Bonehead

Someone who is just utterly stupid and is just empty from head to toe. Boneheads basically live under a rock like Patrick Star but are actually dumber than Patrick Star.

Friend 1: “Hey you know Beyoncé right?”
Friend 2: “Hell yeah bro”
Friend 1: “Her name is so fricken cool. Especially for someone who’s full Korean like Beyoncé”
Friend 2: “You’re such a bonehead”