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 how many times they shave it still 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 shit.
by brittany snow February 02, 2008
A thin, weak, fine collection of hairs on the upper lip that is noticible but not technically thick enough to be considered a real moustache. They are usually found on pubescent boys aged 13 to 16 whose moms won't buy them razors.
by ihatebuffering March 06, 2011
When you have poop on your upper lip like a mustache. You can have many types of poopstaches in the form of a traditional mustache- like pinchers, goatee, soul patch, etc.
by Eva Westberg April 29, 2008