What is Mammal Punch?
1.
An action of which you make the letter 'M' in sigh language with your fist then punching your target in the shoulder; usually this is done by the coolest of the coolest mammals (leaders, gold/silver/bronze badge holders, CraCra Mammal Crew).
*MaMMaL Punch*
'I so just *Mammal Punch*ed more people then you, I win the gold badge'