When a girl's otherwise nice ass is made less appealing by her also having a large stomach.
From behind, Danisha looked good, but when she turned to face us we realized that she's a tummy ass.
by Pedro South March 12, 2009
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The combination of backside, hips and stomach which create an arousingly feminine posterior on a woman.
"Oh man, check out that ass tummy combo over there!"
by Richard Greaney January 27, 2004
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