like it was going out of style

(do something) like it's going out of style

To do something very frequently, quickly, or in great amounts. My husband took a baking course last week, and now he's making cupcakes like it's going out of style! After getting his bonus, Jim started spending money like it was going out of style.
See also: going, like, of, out, style
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

like it was going out of style

Fig. rapidly or frequently. I'm worried about Sally. She's taking aspirin like it's going out of style. The kids have been eating sweet corn like it was going out of style.
See also: going, like, of, out, style
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

like it was going out of style

Describing something being done with extreme urgency, as though it was the last chance to do it. This ungrammatical expression and the synonymous like there’s no tomorrow date only from about 1970 but are well on their way to becoming clichés. They are used in such contexts as “He’s spending his trust fund like it was going out of style” or “They attacked the buffet table like there’s no tomorrow.” Purists frown on the conjunctive use of like (instead of as) but the clichés persist.
See also: going, like, of, out, style
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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References in periodicals archive ?
My Hispanic group had picked up an artificial tree that they covered with all sorts of colorful ornaments and threw tinsel on like it was going out of style. And to boot, they had multicolored, blinking lights all over.