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Adj. 1. The mustache that appears usually on young men when starting to go through puberty. 2. Very thin mustache with thin fine hairs 3. Usually found on pale zit faced nerds, rednecks and Mexicans.
"The guy is 28 and only needs to shave once a month. At best he can get a high school mustache.
by Caz July 16, 2004
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