Using your mouth and lips to create popping sounds to recreate morse code. This can be used when communicating with friends and coworkers in a new way so no one will know exactly what it is you are talking to each other about.
A bank teller used MCMP (morse code mouth popping) to alert a coworker she was being robbed to alert the authorities without the suspect in question even knowing!
by MCMP January 28, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×