A poop stache is the remnant hairs or ingrown hairs that are still
visible on a guy's upper lip even after they shave
. No matter
times they shave
stays there. A poop stache is most noticeable on guys who grow
hair mostly on their upper lip and nowhere else on their beard or sides of their faces; this makes it look even more like
Evelyn: "Look at John, isn't he a hottie?"
Abby: "Yeah, too bad he has a poop