well I never!

(well,) I never!

An expression of shock or surprise. Sometimes used ironically or sarcastically. Well, I never! Such horrible language out of such a young child! To think that a company would prioritize profit over consumer benefit—I never!
Farlex Dictionary of Idioms.

ˌwell I ˈnever (ˈdid)!

(old-fashioned, informal) used to express surprise: Well I never! Fancy meeting you here!
See also: well
Farlex Partner Idioms Dictionary
See also:
  • (well,) I never!
  • vote of confidence
  • twenty-twenty hindsight, with
  • mom and apple pie
  • motherhood and apple pie
  • take (something) under consideration
  • take under advisement
  • take (something) under advisement
  • advisement
  • (I) would if I could