The act of eating excessively until everyday activities such as getting a TV remote or driving a vehicle become strenuous.
We need a designated driver because we are all going to fat out at the buffet tonight!
by Fatguy318 January 13, 2010
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Being lazy and doing nothing, but enjoying the fact that you are -in fact- doing nothing; probably getting fatter because of it too.
"we are just fatting out tonight; watching a movie on DVD and eating some pizza. doing nothing but let it all fat out."
by Slothy McSloth July 11, 2008
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1. To stay at home while all your friends are hanging out and having a good time because your a fat, lazy, batard.

2. To dis your friends because your fat and lazy.

3. To be lethatgic, lazy and unsocialable because of being fat.
"Yo Gary's said he's staying in tonight bro."

"He's gonna fat out?"

"Yeah! Lazy, fat-fuck's fattin-out."
by Cuddy13 May 24, 2009
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A popular youtube video where 2kids imitate a fat kid out of breath. It is performed by the art of beatboxing.
2kids in school beatboxing and raping imitating a fat kid would be Fat Kid Out Of Breath Rap.
by BenG Boi February 17, 2009
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The act of purchasing drive thru food at a quick serve establishment, proceeding to find parking somewhere generally not within restaurant grounds, and “staking out” an area while shame eating food out of a paper bag.
I gotta get back to work but I don’t wanna eat at my desk, I’m just gonna do a fat chick stake out.
by Ruth B. May 29, 2020
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