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 07, 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