Well, I never (did)!
idiomPart ofnever
Well, I never (did)! — idiom
1. An exclamation showing that you are very surprised or shocked by something.
1.idiom
Definition
An exclamation showing that you are very surprised or shocked by something.
Example
Well, I never! Diego just quit his job without warning.
Well, I never did! They painted the whole house pink.