So a few weeks ago the kids and I were at a novelty store and one of my children got one of those cheap mood rings. It came with a card that told you what each diff color means and they got a real kick out of it at the store. So I thought as a funny joke I'd pick one up for my wife. So when she's happy it's supposed to turn green and when she's mad it's supposed to turn red.............well, that's the color of the circle it left on my forehead.