Well around here (Puerto Rico) its a derregatory slang term used by rockers, geeks, etc. when referring to a person (mostly a teenager) who is obsessed and/or addicted to regueton music. [Regueton is of course the puerto rican version of rap, not to be confused with reggea music] Some are know to be a tad bit obnoxious and ignorant.
Though I kinda doubt it would be that.
Huh, really? Well, learned something new today, I suppose.