Idiom: In The Bag Posted on 2nd May 20181st May 2018 by DoubleClick In The Bag: is certain that you will get it or achieve it Example: Once we would get this project award, a big bonus in this year is pretty much in the bag. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Posted in Idiom and tagged Idiom I.