Tired as a mug

In need of sleep or rest.

The saying is derived from a coffee mug because it always has to have coffee in it to stay awake.

Man I've been working all day, I'm tired as a mug.

by Jbgriff1007 May 5, 2014

hungry as a mug

Meaning that your stomach is pretty much looking and feeling like an empty mug. You need to get some food ASAP!

Michael: Man, I'm hungry as a mug!
Covi: Me too! I could go for some subway, you down?

by Deeeeeeej February 24, 2014