Ass Baggie Share definition Flag A bag placed under ones ass when time does not permit them to go to the restroom. My meeting ran a little long yesterday and I wasn't able to leave. Good thing I had my trusty ass baggie. Ass Baggie by PickleChips April 11, 2011 0 0 Get merch Get the Ass Baggie mug. Buy Now — $32.95 See more merch