Top Definition
The act of facilitating the second method of discarding the body's waste while undergoing vomiting. To shit and throw up at the same time. To showup
Well I went to take a piss and ended up showinup all over the place.
Showingup- to shit and throw up at the exact same time, wether the excretion be solid or liquid.
by Cwurk April 28, 2015

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