This mouth piece hinges in the front to allow its insertion into the wearer’s mouth. Once in place, it locks and spreads the cheeks apart, forcing the wearer to bite down on the “U” shaped bar near their molars. This bar houses the end of a Talking Tape which has recorded sound (much like a record) of laughter on it. When the wearer drags their thumbnail along the tape, the recording is amplified throughout their oral cavity. Laughter plays in their head as they are splayed in a grimace, and yet can only be heard by them.