Plastic head 

A politician with so much makeup and wax that he looks like plastic

That fucking Lindsey Graham is a true plastic head

Plastic head by Plastic head September 18, 2017

plastic empty head 

Term for someone who is open-minded enough to adopt an untenable theory (often some kind of crackpot conspiracy), yet close-minded enough to reject all criticism of that theory. The combination of echoing empty space and solid, impenetrable plastic makes rational communication impossible.

I tell you, this Illinois lottery result proves that Obama is the antichrist. You're wasting your time arguing with me, I have a plastic empty head.

plastic empty head by Face of a Clam August 12, 2010

Plastichead 

A person who bases their musical library off of songs they heard on Rock Band or Guitar Hero.

A: "Iron Maiden rocks, I love all of their music."

B: "Name three songs by them."

A: "Run To The Hills, ...uh..."

B: "Plastichead."

Plastichead by Larrabizzle August 18, 2009