Fired? Grab your hat. While hats and caps are no longer part of people's everyday wardrobe, Germans use idioms involving hats all the time.
You can tip your hat, toss your hat in the ring, pass a hat or even wear several of them. Occasionally, someone will have a bee in their bonnet, or maybe a feather in their cap. In English, people might say in utter surprise, I'll eat my hat (In German, the same idiom involves eating a broom).
Not too long ago, people in Germany, men in particular, wore hats to protect them from the elements when they left the house. Today, you won't see a mass of hats when looking down a street in any major German city any more — but there are still plenty of phrases and idioms involving headwear.