Need an idea for a killer Halloween costume? We’ve previously looked at people who dressed up as an iPhone, but how about using the iPhone to enhance a costume? Check out the video below for an example:

Requires the MouthOff app ($0.99, iTunes link).

Note: The MouthOff app requires a microphone, so it won’t work with the first-gen iPod Touch, and requires that you add a microphone to the second-gen Touch (via you headphones or other).

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