A materialistic, fake man or woman. In particular, someone who is attractive yet lacks any sort of depth whatsoever.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

The term was introduced from the movie "Mean Girls". Usualy mistaken for the term "material girl" because they dress well - but not for themselves but more so to impress and make a statement! It's usually an insult refered to girls who are way over there heads, put themselves first, plain heartless and just plain fake! They put on make up everyday and look ugly without it. They put on lipgloss every few seconds. They'll be the ones starting drama in school and minipulating all the boys. It's not hard to spot one, just don't be fooled by their charm. They're called plastic for a reason, that's because they don't feel anything and any insults you run by them will slip off just like cold shiny plastic!

someone who is fake or has a false type of character.

A credit card.

A lightweight, cheap substance often used by large, stingy corporations to more economically manufacture stuff that is better made of just about anything else. Often seen in crappy products that come from China.

A bunch of high school girls who think they are awesome and everybody likes them. They think people call them plastic because they are beautiful and people love them but oftentimes it is just because they are wellknown fakes. Usually made up of fake blondes but may have one or two less popular exceptions.

This term was coined globally with the release of the movie "Mean Girls", which has become almost guidelines for how the "popular people" or "totally cool" groups act.