Top Definition
Fat Upper Ass Area or Fatty Upper Ass Area
FUAA. Some people (like my girlfriend and another male friend of mine), have a small patch of fat located on the small of their back (where the tramp stamp would go). Its an obvious round, or oval fatty patch of skin sticks out just a little bit. Its very distinctive. Especially in the summer time. You can say to you friends at the river, hey, check out my FUAA or look at my FUAA. It must be hereditary, because not everyone has one. I dont! Check your friends out this summer at the river, the beach, or spa
by Jason ::AKA:: Chase January 07, 2008

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