lump it
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!
Lump it!
Inf. Forget it!; Go away! Well, you can just lump it! Lump it! Drop dead!
Lump it!
exclam. Forget it!; Go away! (see also Like it or lump it!.) Well, you can just lump it!