Top Definition
The act of slowly ingesting quick-crete concrete into your diet for a period of up to a month long without performing a bowel movement, then once concrete has settled for a specific amount of time the clientel may lay down (face up) and excrete a hybrid of half concrete and half defication causing one to propel from the ground in a reverse push up style motion
Stephen is trying a dump-up as we speak.
by Kevon Hadel June 11, 2008

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