Originally they're the "mean girls" but this is high-schoolers so as rude as it is ,kinda accurate ╮( ̄▽ ̄)╭
Even though "Bitch Club" is their name but none of the classmate really called them one nor they ever act like one ( well, until about 1/4 of the story that is, but still ) ( ̄∇ ̄")
I dont like it how they call them bitch club