1 definition by RUSTY_plesiosaur☣️

A phrase to describe a person who is not physically overweight/obese who enjoys two or more of the following: *Loves to eat (especially in excess)
*Loves food

*Tasting and trying new food

*Loves to cook and bake
*LOVES BACON

⚠NOT to be confused with a foodie or a chowhound, fat kids at heart are far from snobbish and much too lazy to strategize meticulously for each meal, instead there much more down to earth and not above eating cheap off brand food.
Friend: Why does your skinny ass eat like a pig?

Me: Cause I'm a fat kid at heart now shut up and eat your cupcake!
🔹Layman's terms: a skinny person with food junkie fat kid habits and tendencies.
by RUSTY_plesiosaur☣️ December 11, 2015
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