Someone who got fat by eating way too much fast food and doing nothing but sitting on their fat butts.
Fatty McFat Fat stole my cheescake, then he ate my statue of Hayato Kanzaki!
by RatchetBoo April 28, 2003
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1) used to insult someone who may be fat

2) used to insult someone because you can't seem to think of a better insult than "Fatty McFat Fat"
Hey look, There's Fatty McFat Fat! Freaking Fatty!
by sowutifimuglt,ugly! January 19, 2007
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Used as a disparaging term for an obese individual, or as a humorous nickname given to someone with little or no body fat.
Stop blocking traffic, Fatty McFat Fat!
by Troy February 5, 2003
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a name given to stupid fat people, that are affter than me
you fucking fat festest piece of fat fucking faty mcfat fat
by Anonymous August 7, 2003
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somebody who has more rolls than any sumo wrestler alive and leaves a trail of fat juice while walking down a path after eating and eating more food then one can think of. to be at this stage, one must complete 4 courses of all fast food chains for 3 months straight, tubs of miracle whip, and chocolate dipped everything.

no exercise or concentration needed.
yo, i was walking through wal-mart when this fatty mcfat fat blocked me in the aisle and i had to hold my breath and suck in to get by him... i felt like i was in a blowhole.
by fabby March 14, 2008
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