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A very thin, almost imperceiveable spread of facial hair found on the upper lip. Often found on teenage males.
Nice fustache.
Look at Bobby's little fustache.
by j.w.d November 29, 2006
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A patch of hair grown on a lady in her private area just above the vagina (fu fu) in a moustache shape. Note you can get many variations such as a handle bar fustache or Hitler fuatache.
She has a fustache on her fanny she shaped herself.
by clmaj November 25, 2012
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