The reddish tinted residue from the menstrual cycle, most commonly observed in white underwear. A more serious instance would be if the girl's pants also exhibited stains.
by jhgfng1 May 7, 2010
Get the Period stains mug.An insult used to describe someone who has just done something particularly stupid. It comes from the markings left behind in a womans underwear following some desrciption of vaginal discharge.
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