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The second (or subsequent) boyfriend from Mexico for a girl or guy who is probably white and also may have a Latin fetish. Shortening of "Next Mexican Boyfriend." Not meant in an anti-Mexican manner. See also Exican.
Susie: "I have to find a new boyfriend. Things have been dry around here since the Exican and I broke up."

Jennie: "I know a good-looking bartender. He'd be a good Nexican for you, Susie."
by Dulicious April 16, 2008
Some next mexican shit.
Dr. Dick Poon: Yo i just gripped some nexican buds, quarter pound for 3 bills.
Pedro: Thats sick hombre, but don't be hatin on my peeps.
by juz098 January 24, 2011