I've had enough, I'm going to throw in the towel.
Oh George, please don't throw in the towel!
What are we talking about? Giving up. But why throw in the towel?
It's a boxing term. When a boxer is getting too badly beaten and his corner, they throw a towel into the ring and the referee stops the fight - true!
Here are some more boxing idioms. They guy is a bit annoying but don't throw in the towel on the video.
