McFat is the storage of any fat from McDonalds food.
If you eat a McCake you will get McFat.
by skipper84 May 07, 2010
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Degratory term for a fat person. Person is generally fat. Often used without having literal meaning.
That man is such a Fatty McFat, he wouldn't even move his legs in the cinema!
by Baz November 30, 2003
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A huge, large nasty person. They are probably smelly and greasy, disgusting and generally repulsive.
Damn, Look at that whore Tauni, She turned into such a Fatty McFat after I dumped her slutty ass. She slept with every fool on the Winco night crew.
by Rob Lussier November 01, 2006
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A huge, large nasty person. They are probably smelly and greasy, disgusting and generally repulsive.
Damn, Look at that whore Tauni, She turned into such a Fatty McFat after I dumped her slutty ass. She slept with every fool on the Winco night crew.
by Rob Lussier November 06, 2006
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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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