DMX: Sick of the Same Ol' Big House Buns

DMX thinks he really deserves a break today -- and he'd gladly pay a prison guard for a Big Mac, like, yesterday.

Sources tell us DMX, who's currently locked up in a Miami jail, is so desperate for some fresh meat, that he literally begged a guard for a Big Mac last week. The perennially locked up rapper has spent so much time behind bars lately, he's become a virtual connoisseur of prison slop -- and, apparently, he hates it.

For the record, we're told John Q. Law wouldn't give him any McLovin' -- it's against jailhouse rules.