Over my dead body!

over my dead body

I will never allow it; under no circumstances will that be permitted to happen (i.e., something can only happen if I am not alive to prevent it). Over my dead body will you drive home after you've been drinking! A: "I heard Sarah wants to drop out of school to be a painter." B: "Yeah, over my dead body!"
See also: body, dead, over
Farlex Dictionary of Idioms.

Over my dead body!

Inf. Fig. a defiant phrase indicating the strength of one's opposition to something. (A joking response is "That can be arranged.") Sally: Alice says she'll join the circus no matter what anybody says. Father: over my dead body! Sally: Now, now. You know how she is. Bill: I think I'll rent out our spare bedroom. Sue: over my dead body! Bill (smiling): That can be arranged.
See also: dead, over
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

Over my dead body!

and OMDB
exclam. & comp. abb. [You won’t do it] if I can stop you from doing it! You’ll do it OMDB.
See also: dead, over
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • over my dead body
  • OMDB
  • skate
  • get down to some serious drinking
  • lay off the bottle
  • drive (oneself) to an early grave
  • be so
  • be too
  • overstep (one's)/its mark
  • overstep the mark