Ok, every group has a secret handshake or some type of symbolic gesture for when they see another member of their group..
The Masons have a handshake
Gang members have hand gestures to signify their affiliation..
Surfers make a hang ten hand in the air kinda thing..
We Marauder owners need a sign to make to others we see with MM when around town.. etc..
I propose that when you see another MM owner, you tug your crotch 3 times,1 nose grab, make an M twice with your fingers and a Raccoon lodge type woo woo to signify you have a MM.
I will take some ideas from you here, but I think this will work as is.. Feel free to include yours as well since it can me modified to 4 crotch tugs or whatever you want..