Concerning surprise

Concerning surprise
I had no idea!
Who would have thought?
It was the last thing I expected.
I never would have guessed.
It was caught unaware.
It was caught unaware.
It was the shock of my life.
It dropped like a bomb.
 It dropped from the clouds.
It appeared from the clouds.
It burst onto the scene.
It came out of left field.
It came from nowhere.
It appeared out of nowhere.
It came from out of the blue.
It was a bolt from the blue.
It threw me for a loop.
That knocked me for a loop.
You could have knocked me over with a feather. (cliché)