Bag it off Share definition Flag To forget about something or to insult someone/something. 1. "I really hate this train Michael. I'm going to bag it off" 2. "I hate doing the washing up." "Bag it off." Bag it off by Banjo Patterson123 February 20, 2012 0 0 Get merch Get the Bag it off mug. Buy Now — $32.95 See more merch