Question

to knock someone for six - It knocked us for six when we were told that the company was closing down.  - She knocked me for six when she told me she was pregnant.  - Then I saw the headline - I didn't even bother going to read it - and that just shocked me, knocked me for six.  - To target an old lady in this way is unforgivable. "She's 91 years old and is a tough old bird, but this really did knock her for six.

Accepted Answer

to surprise or shock someone Six is the highest score you can make when hitting a cricket ball.

Idiom	to knock someone for six
Definition	to surprise or shock someone
Examples	- It knocked us for six when we were told that the company was closing down. - She knocked me for six when she told me she was pregnant. - Then I saw the headline - I didn't even bother going to read it - and that just shocked me, knocked me for six. - To target an old lady in this way is unforgivable. "She's 91 years old and is a tough old bird, but this really did knock her for six.
Note	Six is the highest score you can make when hitting a cricket ball.

Knocked Knock Told I Surprise Shock Company Closing