An ass that is big, nice, and round. Usually found on girls.
Aisha has a nice ass.
Jessica has a Fat ass
by Anonymous March 20, 2003
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an ass that's round, soft, smooth, and large enough to have something to hold on to in bed, but not so large it has cellulite. Of course this only goes for girls.
dude 1: Can J-Lo's ass be anymore lovely?

Dude 2: no.
by ucddcd June 22, 2005
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Object that will bounce on your cock untill you cum like crazy
Make sure you slap it hard a couple times before you fuck it
Girl: oh yes! Fuck my ass!
Guy: it's such a nice ass and I'm gonna cum all over it!
by Rhugfuvji March 28, 2013
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A tattoo on the left ass cheek of a voluptuous, huge-assed woman named Agnes.
"Isn't that Nice Ass well designed?"
"Look at the Nice Ass on that nice ass! Isn't it breathtaking?"
by Meshtaga2 April 27, 2009
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