Ask what a Gambeson is

"Dude," you say, "What the hell is a Gambeson?"

"You know," mutterers the guard, "I’ve never really thought about it. I would assume that it is some sort of blunt object."

"Well don’t just stand there in ignorance. Look it up!"

As the guard runs off to obtain a dictionary, you smile in satisfaction. You knew all along that a gambeson is "A defensive garment formerly in use for the body, made of cloth stuffed and quilted." The joke is on the guard!

You escape from your cell before the guard returns.

Unconfirmed