1 definition by l1l Jok3r

sur 13

It refers to best gang the SURENOS{SOUTHSIDERS}SUR means south and the 13 refers to the 13th letter in the dictionaryM for their original name Mexican Mafia aka LA EME & since most of their member were from south california they called each other Sureno{southerner}

Sureno:what U is
pussy ass Norteno:Nor 14
Sureno:sur 13 puto{unloads gun clip}
pussy ass Norteno:187ed{dead}

by l1l Jok3r October 9, 2005