A girl, usually ages 11 - 21, who is unhealthily obsessed with poto. It usually manifests itself with the recent film adaptation, and their nonsensical squeeing over Gerik. Elitists hate them, others feel sorry for them. Either way, I'm pretty sure they're here to stay. Also see phan.
It's nothing but phangirls at the poto.imdb message boards.
What you call an inbred from Philadelphia, played off the word Hillbilly, added with Philadelphia.
Most Philbillies are found in the shittier neighborhoods, Port Richmond, Fishtown, Tacony, and especially Kensington. A Philbilly refers to white trash only, though, so North Philly is not included in this.
If you're stuck in the ghetto, it's just like being stuck in the mountains.
He was drunk at 8 am, his eagles jersey on and sitting on his front porch. He is such a Philbilly.