1 definition by Fashtastic Me

When a guy with a fierce 5:00 shadow engages in a sexual situation with a woman where he has pationately kissed her lips for such a period of time that his scruffy mustache has unknowingly given the female an extremely tender crusty abrasion or pink strawberry on her upper lip, hence the term fuckstache.
"Looks like someone came home with a fuckstache!"

"Ewww girl that fuckstache looks like a bleeder.."

"Don't kiss me! My fuckstache is super tender!"
by Fashtastic Me January 20, 2014
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