The fright of your life - Idioms by The Free Dictionary
the fright of your life
the fright of (one's) life
An extreme and sudden sensation of shock, surprise, or fear. Usually used after the verbs "get" or "give." Seeing the car swerve right in front of her gave Mary the fright of her life. I got the fright of my life when I noticed someone standing right behind me.
the ˌfright of your ˈlife an experience that makes you feel great fear: I got the fright of my life when I saw the gun pointing at me. ♢ He gave me the fright of my life when I saw him hanging out of the window.
References in periodicals archive
Karen Parker Kirtley: "Really glad he's OK, bet you got the fright of your life
THIS Halloween get the fright of your life
with a creepy walk around the secret haunts of Cardiff.