
Not know what hit you
Emotional Impact
This phrase often expresses a strong emotional response to something unexpected.

After the surprise party, he didn't know what hit him.
Sudden Change
Use this when something changes so suddenly that someone can't comprehend it immediately.

She won the lottery and truly didn’t know what hit her.
Metaphorical Use
It's often used metaphorically to describe an event that isn't a physical impact.

The company merger happened overnight; the employees didn’t know what hit them.
WordUp Chrome Extension
As you browse the web instantly look up words you don’t know.
Get Chrome Extension