If it ain’t broke, fix it till it isand IIABFITII
sent. & comp. abb. Don’t leave well enough alone.; Just keep tampering. (A play on If it ain’t broke, don’t fix it.) Does it work too well or something. You must say if it ain’t broke, fix it till it is. Leave well enough alone.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.