not on your life!
INFORMAL
This page is about the conversational phrase not on your life!
Meaning
You can say this if you're strongly refusing a request or rejecting a suggestion.
For example
- "Can you help me carry the refrigerator?"
"Not on your life! I'm much too old for that sort of thing!" - "Why don't you tell your sons to fight in the war?"
"Not on your life! Do you think I want them killed?"
Contributor: Matt Errey