This is an app with 36 funny illustrations of mouths. You can animate them in time with a sentence and hold your phone in front of your mouth to make it look like it’s you talking. Cute.
Want to chew someone out? This app has a photo of a mouth and 8 funny insults on a soundboard.
Potty Mouth Intl Translator
This app has translations of foreign words into English – only “bad”/cuss/swear words!
Harmonica: Just Use Your Lips!
This app simulates a harmonica. It comes with a warning to clean your phone first before you put your mouth on it. It actually works pretty well, and gives you a choice of harmonicas.
Anatomy of the Mouth
This is a flash card app that helps you learn the parts of the mouth and their function.