A person of vietnamese descent that exemplifies their people -- short, small eyes, wife beater, slicked back hair, acura legend, valedictorian of community college, gangsta'd out, extremely ferocious, extremely annoying native tongue, brown criss cross sandals, always smoking, and is never without other Do Mai's in public.
Why the hell are you slicking back your hair, are you some kind of do mai?
Fuck you or screw you. It's a term vietnamese alway use to express there anger or happiness.
I got my new car! Do Mai !