the time in which a portion of food and/or drink or a light treat, esp. one eaten between regular meals takes place. Fat kid snacks include but are not limited to pop-tarts, cinnamon toast crunch and cheese-its. May be used by fat and skinny people alike.
I'm about to eat seven bowls of count chocula, it's fat kid snack time.
by kpppp April 6, 2007
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fuckin' tight as shit band from oly washington
human #1: did you check out Fat Kids Sink Fast yesterday?
human #2: fuckin' yeah and they were tight as shit.... anyways hand over your wallet or i'll fucking kill you
human #1: wait a second what the fuck! when did this turn into a mugging? this was just supposed to be an example.
human #2: yeah and now its an example of a fatal stab wound to the gut. *stabs human #1*
human #3: holy shit! whats going on?!?!?!
human #1: its not what it looks like... *stabs human #3 and runs*
by meth head October 8, 2007
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To be very much on something or all over something; like white on rice; very attracted to something. The term is especially appropriate to use when describing the attraction of a drunk male to a fat chick, or hogging.
Whoa, look at that hot chick with big tits. I'd love to take her home with me. I'd be all over that like a fat kid on cake.
by PMax October 12, 2008
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To snap on someone, usually following it with extreme violence. Comes from the short video clip on the internet in which it says "Sometimes... the fat kid... just ain't hungry!" and follows with some kids throwing some (presumably) food at a fat kid, and he just walks over and punches one of the kids in the face.
"I hate Duncan, I'm glad he's gone. It's too bad we never got to see anyone go 'fat kid ain't hungry' on him."
by FunkRenegade August 31, 2005
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SURFING THE COUCH AFTER A WEEKEND OF PARTYING
After Addie's party got so crazy, Charlie and I did Fat Kid Sunday the next day.
by RLamar March 21, 2009
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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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commonly known as FKFS
-The effect when a fat (or relatively large) kid thinks that playing the wii will make you fit.
-may cause sudden attempts (from that fat kid) of actually being athletic when clearly their are not.
'wow nathan tottaly has Fat kid 'fitness' sickness (FKFS) he tryed to flex for some girls because he stayed up all night playing wii fit
by Jon DeYonker February 27, 2009
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