protein stain 

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'

protein stain by WILFONG June 11, 2003

protein stain 

Something that does NOT come out with just shampoo. Very sticky, irritating, but not flammable

Hey harry, this protein stain tastes nothing like caviar!!!

protein stain by Zack Morris May 13, 2005

protein stains 

stains caused by ejaculation

i went to a hotel and there were protein stains on the sheets... disgusting

protein stains by mr happy January 5, 2004

protien stain

a white sticky substance (cum)

stefan go ask hendi wat a protein stain is

protien stain by vince May 13, 2005