When you do a girl anal and you get that shit thats green on your dick and you cockslap her in the face with it.
Guy1:I grass stained my girl last night
Guy2:lols
Guy1:I broke up with her afterwards
Guy2:why?
Guy1:she liked it.
Guy2:lols
Guy1:I broke up with her afterwards
Guy2:why?
Guy1:she liked it.
by diarrheaman May 1, 2011
Get the grass stainmug. you want to coincidink?
by diarrheaman May 1, 2011
Get the coincidinkmug.