The shit stain on the underwear of life Share definition Flag What eminem describes himself as in the song Won`t Back Down (ft. Pink) ...Shut the fuck up listen while my shits playin`Im the shit stain on the underwear of life.. The shit stain on the underwear of life by blu3hat February 27, 2011 0 0 Get merch Get the The shit stain on the underwear of life mug. Buy Now — $32.95 See more merch