Top definition
The horrible feeling after indulging on too much food, similar to the hangover of alcohol. Fat hangovers have almost all of the same effects of regular hangovers. Fat hangovers, however, usually occur right after eating or when going to sleep.
Jimi has a fat hangover from today's food party. He's vomiting all over the sheets and has a major head and stomach ache.
by AssCon July 14, 2011