ploopy

This is the word you use when your parents do something utterly stupid or make a stupid decision. Calling them stupid or retarded directly to their face would probably get you in trouble so instead call them a ploopy. This is essentially another way of calling your parent a retard.

Mom: Darling, how do you move this pointy thing on our computer screen?
Son: Mom, you move the mouse.
Mom: What's the mouse?
Son: Oh god mom, you're such a ploopy.