Dirty Demo Share definition Flag When a person squats over your head and farts so loud you can hear thier anal hole open I fell asleep one night at a party, and this girl got me so bad with a dirty demo that I couldn't hear straight for a week. Dirty Demo by Jewtentant August 1, 2008 0 0 Get merch Get the Dirty Demo mug. Buy Now — $32.95 See more merch