Dirtmirsh Share definition Flag An extremely dirty person who finds the basic concepts of bodily hygiene offensive, and never practices them in any way. Wow, Tom smells horrible! That guy is a dirtmirsh! Dirtmirsh by Flawedspirit December 24, 2009 0 0 Get merch Get the Dirtmirsh mug. Buy Now — $32.95 See more merch