not on your life

“She teased back something to the effect of ‘Not on your life.’

Normally, I would have said not on your life, especially since we weren’t even sure if he was a vampire.

Every bit of humanity says not on your life.

Except perhaps among the 1%, not on your life.

Let’s say you’d like to get yourself a shot of prevention, but your parents say, “not on your life.”