to not know what hit somebody
01
to become extremely shocked or confused as a result of something undesirable that suddenly happens
![to {not} [know] what [hit] {sb} definition and meaning](https://cdn.langeek.co/photo/46310/original/?type=jpeg "to {not} [know] what [hit] {sb} definition and meaning")
Idiom
Informal
例
A sinfully attractive man who knows what he wants, Rafael seduces Cherri before she knows what hits her.
When the company announced layoffs, some employees did n't know what hit them.
