It would probably take a bolter shell to crack that thick skull of his.
— Commissar Ciaphas Cain, on Jurgen
"Um. Hard. Head. It's not just a name, you know."
— Hardhead, The Transformers (IDW)
Don't hit the cabbie's head with your hammer; you might hurt it.
(The hammer, that is!)
"I BREAK THINGS WITH MY FACE!!!"
— Rachael Hart, Dominic Deegan: Oracle for Hire
My name is Bond, something Bond. I think. You'll have to forgive me. I've been rendered unconscious so many times that I suffer from long-term memory loss. [...] Sorry, honey, I meant to clean that vomit off my shoes.
— Wanjek, Bad Medicine
Vila: What hit me?
Dayna: Don't worry, Vila, they went for your least vulnerable spot.
Vila: Oh, my head...
Dayna: Exactly.