A well-defined rump wherein the upper-buttocks muscles curve individually to form the shape of a heart.
"Man, oh man does Janice have a hot, heart-shaped ass!"
by creedmoor October 23, 2004
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when something goes horribly wrong.
I hope everything thing goes okay. You know she will blame it on me if everything goes ass shaped.
by The Riviera Kid April 12, 2011
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