Shiver George’s timbers

George was a pirate, but he wasn’t a very good pirate.
He spent a lot of time looking at timbers, watching to see if they would shiver.
The timbers just sat there, doing nothing.
“You do know that saying comes from ships in heavy seas,” said the captain. “The ship crests a wave and crashes back down so hard, the timbers shake.”
The next time the ship was in heavy seas, the captain tried to point out how the timbers shook after each time they crashed back down from a wave.
But George was too busy throwing up to watch.