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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the potential result of an overweight person having to endure any of the following life threatening events:
1. too much time without food
2. too much of the same food-i.e. 100 candy bars
3. exercise
"man, if i dont eat soon im gonna have a fat kid heart attack"

OR

"let the boy take a break from running before you give him a fat kid heart attack"
by fadedredwing May 13, 2009
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