When one gives a blow job, and the recipient cums on the "giver's" face, just below the nose.
This is also often related to gay sex, as mustaches are usually inherited by males, rather than females
That guy gave his boyfriend friend a cum mustache the other day
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tuft of pubic hair above the vaginal entrance; refers to landscaped pubic hair and therefore not applicable to the "natural look" or totally shaved female crotches
When I dropped to my knees to perform cunnilingus on my female partner, I was overjoyed by her nice cunt mustache which highlighted her vagina.
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When a man takes a steaming dump, and smears it on his woman's upper lip (like a mustache). The man then smashes his pubes into her face, leaving loose hair in the fresh fecal matter.
My girl and I were watching Top Gun the other night and I Detroit Mustached her face like Goose.
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A renowned gang of utter literate genius' who ruled the interweb with their witty banter and awfully good spelling!
Dude 1: hai have u hurrrd of the mustache gang?
Dude 2: naw blud whos they thn?!
Dude 1: awww man they were the most epically clever amazing awesome people online ever in the whole wide WURLD.
Dude 2: Word.
When a group of men in Minnesota are out ice fishing and one of the men falls asleep, the other men then proceed to ejaculate into a solo cup, they then drag the sleeping man outside into the below zero degree weather and pour the semen onto his upper lip causing it to freeze; creating the Minnesota Mustache
It was so cold up at the lake that Sven unknowingly wore his Minnesota Mustache for two days in a row.
When a girl puts the dick in her mouth after buttsex and shit ends up on her upper lip.
I was slamming the hot girl from chemistry class in her pooper and she hopped off and started sucking my cock and gave herself a Mocha Mustache!!
A mustache grown during a military deployment.
Many soldiers will grow a mustache while deployed. It's a long time away from friends and family, so there's no worries about loved ones making fun of it growing in. Also, a mustache is the only form of facial hair allowed by AR 670-1. It's a small freedom, and many choose to exercise that freedom.
It's one of those small things that you have control over, so it's kind of fun to see how well you can grow one, even if you might shave it when you get back to the states.
It may seem silly to think about, but if you have deployed, you'll understand.
Pvt: "Did you see LT's deployment mustache?"
PFC: "yeah, it looks cool but he's probably gonna shave it when he gets back home"