I always wondered what the M's stood for in M & M's.
In 1941, the owner of the Mars candy company, Forrest Mars Sr,. made a deal with the president of Hershey, William Murrie, to develop a candy that had a hard shell with chocolate in the middle.
Mars needed Hershey's chocolate because he thought there would be a shortage due to the war that was going on. (World War II)
The deal gave Murrie a 20% stake in the newly developed M&M's.
In 1948, Mars then bought out Hershey after chocolate rationing ended.
The name thus stood for “Mars & Murrie” the co-creators of the candy.