Maladaptive Daydreaming: where wild minds come to rest
Some people here are familiar with the story "The Secret Life of Walter Mitty" originally written by James Thurber in 1939. It's about a guy who works for a publishing company and lives in elaborate fantasy worlds but eventually goes through a real life adventure.
I strongly suspect that the author understood MD very well. Anyway it was made into a movie in 1947, but the modern remake with Ben Stiller as the main character Walter Mitty is due to come out in December this year.
Check out the trailer:
You can tell that he is MDing from the trailer, but what resonates for me the most is the part where his coworkers are watching him DD by the coffee machine.