the fright of your life the race of one's life
or the race of one's life
phrase [NOUN inflects]You can use expressions such as the fright of your life or the race of your life to emphasize, for example, that you have never been so frightened or that you never have run faster.
[emphasis] A top reggae singer gave a young fan the thrill of her life when he serenaded her.
See full dictionary entry for life