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The leftover urine that drips onto the pants or shorts after zipping up, giving the impression that one has pissed himself, or the water from a faucet that somehow ends up on said parts. Runoff is commonly hidden or removed by wearing long shirts or utilizing the hand-dryer while no one is around.
Bill: Oh hey man looks like you just pissed your pants!

Sven: F*** runoff!
by Waldosziak February 28, 2012
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May 18 Word of the Day
When you think up something brilliantly righteous while baked.
X: I had this great highdea last night
Y: You clearly were philosopher stoned.
by TripleWest September 03, 2012
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When you get fired on a job site.
The safety man came around and i wasn't tied off. So I got run off.
by Welder77 April 19, 2009
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To make a photocopy of something
Can you run off a couple of copies of that worksheet?
by blenheimears April 24, 2010
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when ejaculation has occured past it's maximum point
Why is it still cumming like that?
I don't know. It's run off.
by Ben fuckermother August 26, 2003
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Runoff is usually for science, and runoff is used by a mountain. The running of water from the pure land up top.
The runoff from the mountain transferred to the rocks due to the water transition.
by Shoto_X_Froppy February 26, 2020
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