Top Definition
Mo is the slang for more, and dump is slang for shit (the good kind). Cause, why would you want more of something that wasn't good. Together this word means the "best shit"
In a game of poker the modump hand is the straight flush ace high.

When watching basketball, Shaq is the modump.

www.modump.com
by Lee Payne February 01, 2005
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