1 definition by Thebuck093

Etymology: fat + fast food, from one of the common causes of obesity being overconsumption of fast food

Food typically consumed by a specific fat person that is the cause of their weight gain, whether it be fast food or not.
Two teenagers are hungry and want something to eat.

Fat boy: Hey, I'm hungry. Want to get something to eat?
Skinny boy: Sure. Let's go to Chipotle.
Fat boy: Nah, I'm in the mood for McDonald's.
Skinny boy: But you eat so much fat food!! Didn't you just say you were trying to lose weight a minute ago?
Fat boy: Yeah, but I eat McDonald's almost every day?
by Thebuck093 June 04, 2011

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