1.   His next question totally knocked me for a loop.

2.   Losing his job really knocked him for six.

3.   This flu has really knocked me for six.

4.   I was going to knock for I was still intrigued by him but Benjamin called me so I let the matter rest.

5.   She were knocking for this thing you know.

6.   What, when do you want us to come and knock for you?

7.   But they they always come and knock for me and you know they kicked that, you it was them that kicked down the walls?

8.   Before then, he was knocked for trying baseball, then for leaving it.

9.   But most others have been knocked for a loop.