A generally derogatory term for residents of Big
Horn County, Wyoming. Counties in Wyoming are represented as the first number on a Wyoming license
plate. Big
Horn County is represented as the number "9."
"Why in the
hell is this person driving 25 in a 45 mph zone? Ohhh, of course; it's a
fucking Niner!"
"Wait, so you grew up in Big
Horn County? Let me ask you something that has been pissing me off since I moved here four years ago; why do Niners drive so slow? There is no excuse for it!"