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1.
McFat is the storage of any fat from McDonalds food.
If you eat a McCake you will get McFat.
by skipper84 May 07, 2010

Words related to McFat

fat fatty big fatass
 
2.
Fat produced by eating too frequently at Mickey D's.
Look at that Mcfat arm!
by pentozali August 23, 2013