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A girl/woman's booty that is very big, round, firm, soft, jiggly, & thick in all the right areas, with little to no fat around the waist/midsection.
e.g. A booty so fat and round you can't see the pussy/butthole.

e.g. A booty so fat, that you can see it from the front!

Btw a fat booty is 1000x better than a big booty. ; )
by TheBigBootyConnoisseur September 28, 2015
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