hootbag Share definition Flag (noun): a ruthless, immoral, senseless broad who's actions often deem her to be slutty, and/or a whore. Johnny: "What do you think of Britney bro?"Cory: "Aw man she's a total "hootbag"." hootbag by oBOMB February 3, 2012 0 0 Get merch Get the hootbag mug. Buy Now — $32.95 See more merch