The definition of the word cumstain is someone who is intensely gay and hedonistic.

A cumstain only associates with people who could also be described as cumstain, some of who assist in providing them with the jiz that designates them as cumstain.

A cumstain may periodically have cumstains on their clothes and/or skin.
Hey cumstain how many liters of jiz have you drank today?
by Gerdunga February 06, 2008

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Top Definition
A stain left on a surface after sex, usually clothing or bed sheets.
Amanda had a big cum stain after her gangbang.
by cardinal_fan October 12, 2004

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Although often referred to as a side effect of blowing one's load, this is also an acceptable term for someone who is stupid, lame, a douche bag, or simply a raging tool whom you feel utter disdain for.
Hey, cumstain, why the hell did you eat my sandwich?
by B-Mac! May 08, 2007

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a complete waste of human flesh or a moron
my boss is such a cum stain
by odie0811 April 17, 2006

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Whats left on your boxers after you download pron.
I woke up the next morning and the sheets were stuck to my cumstains!!!1
by big joe April 26, 2003

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stain on your keyboard after you look at porn. Hard to clean without strong paint thinne or varnish.
by Mike West March 18, 2003

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A stain left on a surface after sex, usually clothing or bed sheets.
Evans mom rubbed her pussy all over a dirty motel room bed and got pregnant from a cum stain on the bed.
by wouldntyouliketoknow;) January 11, 2011

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male or female love juice that has been left to dry on an absorbent surface, usually dark sheets or underwear.
Fuck look at these cum stains! My mom is gonna know I regularly beat off in bed when she cleans my sheets.
by ennisinaus July 25, 2010

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