Microsoft Reasearch is having a little fun today by releasing an app called “Face Swap.” The app does pretty much exactly what you’d expect: swap faces. For example, take the picture below of Stephen Elop and Steve Ballmer. All you do is add the picture, let Face Swap find the faces, shake your phone, and then roll on the floor in laughter. Once the image is done you can save it or share it. It’s easy, fun, and hilarious. Everything a good app needs.