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Bad Mexican Teenage Mustache. The whisky, thin facial hair that occurs above the upper lip. Generally characterized by young Mexican adults, it can also occur in testosterone-driven women, as well as adult makes incapable of developing full facial hair.
Yo what's up with Arthur and that BMTM??

Oh, no he's for real 29, he just can't grow facial hair. He's been working on that since he was 12.
by Alibear12 October 29, 2015
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