Your windows will become mirrors. (Photo: Wikimedia Commons)

Whether you're paranoid or just think it's cool, you can now get tinted windows cheap thanks to a new Groupon offer. If you're willing to trek to Sterling, Virginia, that is.

But act fast. There's only a day or two left to get yourself windows that let no one see just what you're doing ... if you need that, that is. What have you got to hide?