cock stain Share definition Flag Stain from ones penis, what you'd find on a single males' bed sheets. Used to belittle and offend other males. Get outa my face you little cock stain before I bitch slap your ass!!!! cock stain by The Big Frazbo October 1, 2006 0 0 Get merch Get the cock stain mug. Buy Now — $32.95 See more merch