'Mouth Off' Gives Your Words a Virtual Mouthpiece

Thanks to “Late Night with Jimmy Fallon,” ‘Mouth Off’ is the latest iPhone application to go viral. It works like this: Put the iPhone up to your mouth (not necessary, but kind of defeats the purpose if you don’t) and talk.

The application lip-syncs your words with one of 8 mouth types—Rude Boy, Robot, Synth, Grandma, Kiss-me-quick, Angry-Emperor, Dog, and Monster. Check out some YouTube videos of the app here.