a plastic
Plastics are the meanest girls in school, and they think they're the best until a new girl comes and beats them up. They’re like a group of fake, backstabbing, mean girls who think they rule the world.
My friend got beat up by a new girl and the plastic group got hit by a bus.
The plastics at my school are the meanest. They start fights over nothing.
My sister got kicked out of school because she started a fight with the plastics.