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A margarita mustache is when you drink a margarita in the sun,and your uppler lip starts to sweat. When your pores are open and the sugar from the margarita gets in, its causes your uppler lip to break out therefor causing a Margarita Mustache.
1. Brian is hot but he always has a Margarita Mustache.

2. Man, i really need to get some proactive, I'm starting to get a margarita Mustashe.

by dindy February 18, 2009
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