like it is going out of fashion or style
like it's going out of style
With great enthusiasm, urgency, and/or frequency. While remodeling the house, we started spending money like it was going out of style.
like (or as if) it is going out of fashion (or style) in great quantities and without restraint.
2004 Daily Dispatch (South Africa) Online On the romantic front, it is action all the way; and you might be spending money like it's going out of fashion in order to keep yourself in style.