M&Mism Posted in M Best definition M&Mism My mom tried to make me jewish but i said i wanted to be an M&Mist by practicing M&Mism. Then she beat me with a bat and told me i was a waste of sperm. How satisfied are you with the definition? Looking for M&Mism meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 65 times.