Dirty Thurston Share definition Flag The act of walking by someone and farting. Also known as cropdusting. Mark just ripped a dirty thurston and cleared the room with the smell of rotting tuna fish and broccoli... God help us all! Dirty Thurston by Jerry jamm May 21, 2015 0 0 Get merch Get the Dirty Thurston mug. Buy Now — $32.95 See more merch