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 8, 2007
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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 27, 2003
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1.n) a stain resulting from the presence of cum 2. adj) something that has a negative referance
1. I got a cumstain on my shoe!
2. You are such a cumstain!
by Jack B. Nimble December 17, 2002
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This is a stain of your sperm on your clothing, very difficult to get rid of stain, washing powder use should be doubled when removing cumstain
"OMG OMG OMG (moaning), YOU JUST PUT A CUMSTAIN ON MY LEGGINGS JERRY!"
by magical_pony October 30, 2019
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1. General insult

2. Literally a stain made by cum, cum being the product of coming or having came, comed or cummed.
You're a cumstain on the bedlinen of society.
by dbviwuhbv October 5, 2010
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wen he/she cums on u sumwhere and it wont come off and starts to go crusty
by lisa mcbirdseye February 3, 2003
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