白黒 しろくろさせる
meo shirokuro saseru

Ichidan Verb
Idiomatic Expression

1. to be surprised; to be bewildered; to be confused; to be flustered; to roll one's eyes up and down

こと意外 いがい きに 白黒 しろくろさせた。
kotono igaina nariyukini meo shirokuro saseta.
I blinked in amazement at the unexpected development.
Other forms: