Dusty Dorthy Share definition Flag The act of performing sexual intercourse while midair in a class 4 or 5 tornado/hurricane. I hate all these people complaining about hurricane Katrina. That was the best Dusty Dorthy I have had in my life! Dusty Dorthy by ballsackforlife April 28, 2009 0 0 Get merch Get the Dusty Dorthy mug. Buy Now — $32.95 See more merch