A shit so hard, that it tears the ass on the way out, leaveing his/her under-garments stained red.
Holy shit paste! I just pushed out the hugest Ass Diamond. Ohh god....
by DrMcRofl February 02, 2011
During the act of anal sex the compressing of the penis against feces occurs. The excrement then becomes compacted into a hardened "Ass Diamond".
Yesterday morning Latoya shit an "Ass Diamond" that ripped her ass apart.

My friend Jake has been making "Ass Diamonds" all morning because of his late night over at the frat house.
by The Ass Burglar October 12, 2012

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