Acronym for 'Direct Mail', a media which used to posting goods infomation especially promotional products the store provided. Usually a piece of paper or more, featuring effectivity and celerity.
by Kyle J. Shi December 25, 2007

DM stands for dick massage.
by TBITSPJ March 7, 2017

A forever DM is someone who is either forced or willingly always plays the gamemaster or dungeon master role in table top RPGs. They spend countless hours on their campaigns just for players to shit on it.
Player: "Hey dude can you DM a oneshot this saturday?" DM: "Why can't you just do it? It's your game after all.." Player: Because you're our forever DM you bitch!"
by SomeGuyIsHere July 27, 2021
