osh bag Share definition Flag A female, generally known for giving 'brains' or 'uckers (badders)'. Or sleeping with a range of boys usually a gang. Friend 1: yo g dial up that osh bag from the other dayFriend 2: yeah cool bro I'll do that now. osh bag by Jack Jones. April 27, 2015 0 0 Get merch Get the osh bag mug. Buy Now — $32.95 See more merch