Startup Idea : App That Tells You How Much You Weigh - NOT!

The idea is to have an app (for IPad size preferred), that asks you to put your mobile device on the floor, stand on the screen in order to see how much you weigh. Once you do that, it takes a picture of you, sends it to your friends list / posts to facebook, etc. and shows how stupid you are for thinking this is actually real. Afterwards, the app offers you to send a weight request to your friends so they can get the experience as well, with a custom message, say You got to try this cool app! it ....