When you haven't eaten anything in a long period of time, and your stomach churns and aches because it is empty. Feels like nausea, but nothing to throw up.
Person #1: "Have you eaten anything today?"
Person #2: "No, I've got some serious gut rot going on."
Person #2: "No, I've got some serious gut rot going on."
by black bear April 09, 2006
by black bear December 07, 2015