Here in Atlanta we have a weekly publication called Creative Loafing. It's a "tabloid-style" news/lifestyle/entertainment kind of thing. They have what I think is a syndicated crossword puzzle called Jonesin' by Matt Jones. The issue from last week (vol. 42, no. 4) had the following clue in the puzzle:
13 Down Dungeons & Dragons game runners, for short
And, of course, the answer was: DMs
Ted