Top definition
Spermatozoa that has dried on a fabric or carpet or anything else.
"Damn when my wife sees all the protein stains on our new bed she'll know I've been fuckin' around'
by WILFONG June 11, 2003
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2
i went to a hotel and there were protein stains on the sheets... disgusting
by mr happy January 05, 2004
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3
Something that does NOT come out with just shampoo. Very sticky, irritating, but not flammable
Hey harry, this protein stain tastes nothing like caviar!!!
by Zack Morris February 23, 2005
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