Oaface
Oaface is when someone is so dumb they could be mistaken for a doorknob. It’s like being a brainless meatball.
My cousin’s got an oaface so thick you could build a house in it.
That guy at the party thought pizza was a type of seafood. Real oaface.
I tried to explain algebra to my brother. He just stared at me like I was speaking fluent baboon.