An expression of annoyance and dismissal of someone or something. It means the same as "Forget it!" Well, you can lump it because I'm not staying late to help you—that project is your responsibility!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Inf. Forget it!; Go away! Well, you can just lump it! Lump it! Drop dead!
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
exclam. Forget it!; Go away! (see also Like it or lump it!.) Well, you can just lump it!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.