It seems as if The Dude will always have a "boo boo" on his head area at all times. I guess when your top half is the greater mass, it stands to reason.
We have been warning him about standing or sitting on the arm of the couch. Kept telling him he was going to bonk his head. Boy did he ever! Off he went into the cabinet next to the couch. His brow swelled up over his eye giving him that shrouded neanderthal look. He got really upset that I was calling him a "Neanderfal". After all, he is only a Dude according to him.