IDGS Share definition Flag Stands for I Don't Give A Shit, a common abbreviation which is used online. Andrew: I just screwed your sister lolCaleb: IDGS, shes a fuckin slut, enjoy your STD's. IDGS by Bagelboy26 May 3, 2009 0 0 Get merch Get the IDGS mug. Buy Now — $32.95 See more merch