Plastic

Plastic is part of Zappa's conceptual continuity, usually in reference to things or people who are fake.

• Who Are The Brain Police?: "...when the plastic's all melted and so is the chrome?"
• You're Probably Wondering Why I'm Here: "plastic boots and plastic hat"
• It Can't Happen Here: "plastic folks, you know"
• The liner notes for the song Hungry Freaks Daddy say: "some of you like pep rallies and plastic robots who tell you what to read."
• Plastic People
• Uncle Bernie's Farm: (...) "A hungry plastic troll" (...) "a box of ugly plastic things" (...) there's a little plastic congress (...) "and they're all made out of plastic, when they melt they start to stink"
• Brown Shoes Don't Make It: "Be a loyal plastic robot for a world that doesn't care."
• Mom & Dad: "It's such a drag to have to love a plastic mom and dad"
• Magic Fingers: "a plastic chair"
• Hunchentoot: "Been peepin' all over my plastic rock"
• Carolina Hard-Core Ecstasy: "plastic leather 14 triple D"
• A Little Green Rosetta: "then maybe I should turn off my plastic megaphone"
• Tinsel Town Rebellion (The Track): "of leather groups and plastic groups"
• The Dangerous Kitchen: "before you smell the plastic container"
• Artificial Rhonda: "Artificial Rhonda with the plastic tie".
• This Is All Wrong: "It's sort of like plastic, only it's made out of animals."
• The Plastic People Of The Universe
• The Plastics

Coincidentally John Lennon and Yoko Ono's band was called "John and Yoko's Plastic Ono Band".