A girl that dates a guy then hops to the guy's best friend and hops to the best friend's best friend. Also known for ruining friendships.
This girl Leia goes out with Jr, breaks up with him. On the prowl and goes with Joey which is Jr's best friend. Leia got bored with Joey, she hops to Joey and Jr's best friend, Jake, even though Joey and Jake had no interest in her. She talks shit, causing them to tear apart. Fucking whore. Joey, Jr, and Jake became best friends again, all of them call Leia the homiehopper.
A girl or guy that hops (hooks up/has sex with) from one person to another, where the people they choose to hook-up with are within the same group of friends (homies).
You can see who's a homie hopper on homiehoppers (dot) com