A "weak" mustache that is grown by a 15 or 16 year old that doesnt shave. Mexistashes consist of just peach fuzz.
"Al has a mexistash"
by will November 30, 2003
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a mustash that mexicans have that shadow their upper lip.
I have a thing for guys who have a mexistash!
by fghjkjh February 25, 2008
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A hidden collection of Mexican Cannabis.
Hey, someone found my mexistash and smoked it all.
by Miiiiikkkkkeeee April 30, 2008
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