When one is not fat but breaths heavily like a fat person when performing any sort of activities.
Stacy: I hate going up these stairs!
June: Me too! It's only one flight but I always get fat breath when I reach the top.
by Veenasaur March 01, 2012
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Fat Breath, when one is potbellied, blubbery , plump, voluptuous, weighty, double-chinned, corpulent, jowly, pudgy, tubby, roly-poly, fattish, fleshy, portly, stout or chunky. Typically means that the individual either:
1. Has the odor of rancid lard

Or

2. Is fat in general, and is used as a nic-name.
"Hey Fat Breath, did you want to upsize your fries?"
by Jeremy Plume May 28, 2008
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When someone breathes overly hard, unnecessarily into a gaming microphone producing a very annoying windy effect to other gamers. This sound its what it sounds like when a fat person is breathing heavily, like when they walk up a flight if stairs.
Dude, quit fat breathing in your mic, it's so annoying!
by Veggie Face July 25, 2010
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It’s a person that reminds me of the zoo and if any of your siblings have a tongue call them fucken fat cubby zoo breath because there from the zoo so that’s what it makes then smell like that
Oh this girl name peanut head, calls my tongue fat chubby zoo breath
by I’m awsome July 08, 2019
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