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1.
If an individual acts as though they have a severe attitude problem and are also quite obese. Coined by the Belgrave Warriors
That gyal's got an extreme fatittude problem
by Ajapali December 07, 2005
 
2.
The general way-of-being of a fat woman that is rude, self-absorbed, conceited, and/or smart mouthed.
I don't like Sara because she gives me a lot of fatittude.
by Clarionman October 27, 2007