D.M. Share definition Flag abbreviation for Dick Move. Not in reference to actual penis movement, but refers to action made by impolite person causing another to take offense. Did you drink the last of my milk and leave the carton in the fridge? D.M., dude. D.M. by lowjoe March 11, 2009 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug