the ESRB rating that stands for Mature, 17+. It basically means it has lots of violence or sex and stuff, and that stores are supposed to check id's when selling the game (unfortunatley, they actually do)
The 13th letter of the alphabet. Used widely in online games to reduce the amount of zeros in online currency . The "m" is used after a number to represent that number in the millions. Anything under one million is represented with k after the number.
M is a Fritz Lang film released in 1931. It is believed to be potray serial killer Peter Kurten. It is set in Berlin. The killer kills children and leads the police and whole town on a pain-staking chase.