When a cat has a built in mustache.
This cat is a bu because they have a fine bu stache.
by Weinerdog17 April 12, 2021
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when you scratch your butt with a finger and then place the same finger under someone's nose to resemble a mustache.
It grossed me out when my buddy gave me a butt stache after scratching his ass.
by Bad Teacher June 14, 2015
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Verb, doing pretty much anything related to facial hair
Dude, he's stacheing his sick 'stache.

His facial hair is beautifully stached.
by Dr. Doofmann July 22, 2021
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This is a scruff patch left above the upper lip caused by long term spit swappin'. Usually done as an extra marital affair and in broad daylight. Can happen while standing or while sitting on their duff. It usually takes 1-2 hours to develop and then scab over causing a bit of an eyesore. May also cause twitching.
Wow I could see her Stache burn from a mile away.

Does she always get stache burns on the weekend?

I guess her ball less wonder of a husband has gotten used to the stache burns by now.
by Sass sha J May 14, 2010
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An international movement to share the uncomfortable news that you, as a woman, might need to do something about that 'stache.

Since it's creation in 2009, has since expanded to include just about any nasty attribute about which the statement "someone needed to say something" might be said (body odour, haircut, bad breath, terrible hat, something in your teeth).
Friend 1: "I just got an email from the stache patrol telling me that I have terrible taste in music and that I should stop requesting Nickelback at parties."

Friend 2: "Finally!"
by Captain gurzly August 19, 2012
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When someone is tickling your ballsack/nutsack with their moustache.
“Man my girl really gave me a stache sack the other day
by Stachesack May 31, 2020
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