sayings/idioms to help non-native English speakers

Feel free and post so others may learn the language well. English is full of idioms, particularly in speech.

Here's one:

"Put a sock in it"

It means to shut up or be quiet. No actual use of a sock.

"Don't beat around the bush" means to get to the point.

"Wrap your head around it" directs one to try to understand something.

It'd be awful hard to wrap a head around something literally (non-figuratively).

throw in the towel = to give up

Though you can use a sock, it will work.

The sock thing I guess maybe in home robberies or something.

She has a lead foot = she drives fast, perhaps excessively fast. Lead being the metal.

My mother will be late for her own funeral = mother is a big procrastinator, always late for appointments.

I have an iron gut = I can eat just about anything, such as questionably spoiled food.