"ScreamBody is the first of the series of Wearable Body Organs. ScreamBody is a portable space for screaming. When a user needs to scream but is in any number of situations where it is just not permitted, ScreamBody silences the user’s screams so they may feel free to vocalize without fear of environmental retaliation, and at the same time records the scream for later release where, when, and how the user chooses."

Cool. If they could just apply this concept of hold and release to other forms of undesirable public urges, say, a "Stuff A Phone Book Into The Mouth Of That Crying BabyBody", we'd be able to ride the bus again.

Be sure to watch the video.
Screambody[media lab, MIT]