tread marks Share definition Flag Not wiping you bum enough after a poop, and some poo residue is left on your tighty whities...thereby looking like a treadmark. I didnt wipe hard enough, theres poo on my underwear, and now i have tread marks tread marks by Samuek August 18, 2008 0 0 Get merch Get the tread marks mug. Buy Now — $32.95 See more merch