1 definition by Daryl Brown

When you are masterbating and you are about to unload but you are not near a bathroom and you do not want to make a mess. So you run to the bathroom/toilet holding the end of your penis with one hand and the other hand in the air doing an impression of a monkey.
Oh shit, im about to cum - im gonna have to do a monkey run to the toilet.
by Daryl Brown November 18, 2007
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