M&M historically for the last half of the 20th century has referred to Mickey Mantle and Roger Maris;the M&M boys; the two famous sluggers on the New York Yankees of the 1950's and 60's; the double M's later became the brand of candy by the same initials.
HolyCow! The M&M boys rocked the old stadium tonight
A delicicious kind of chocolate candy with a crunchy, colored coating. Made by the Mars chocolate company. They are round and sometimes used in cakes, frostings, and other types of sugar filled deserts and dishes.