Top Definition
Mustaches that FOBs (fresh off the boat) have at a very young age. Around their teen years. People with these fobstaches are usually found in Cyber Cafes playing Counter-Strike and other online-games. Beware, these people usually are older than they look and sometimes have a machete in their back pocket so be cautious.
Yo Bernard you better shave that shit off you're growing a fobstache there.
by vietdragon February 01, 2005

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