1. A thin pedophile mustache usually on a teenage boy that can barely grow facial hair. Made popular by a dude named Goose who has a pedophile mustache.
2. A mustache on a dude named Goose.
Look at that odd GooseStache.
I am going to grow a GooseStasche.
When are you going to cut off your GooseStache
A mustache that only appears occasionally. Origin unknown. First noticed as a shadow on the upper lip, may later show up in photos to the confusion of the clean shaven individual afflicted with it.
"Did you see that ghostache gigato was sporting at trivia last Tuesday?! Off the richter!!"
A moustache that a teenager (or adult) grows in an attempt to look cool, but makes them look like a goon. In some cases the moustache is not filled in all the way or is badly groomed.
He thinks he looks cool with his goonstache, but it looks like dirt under his lip