I could wait until we knocked off in the middle of the day.
Just when at last, he was about to knock off for the night and get some rest.
What if we do knock off some guy once in a while?
It does look as if we're going to be knocked off.
All the rest were within, and knocked off for that night.
"I thought you were going to go over and knock his head off."
Some said that was why the President had been knocked off.
If she were shot, the impact would knock her off.
Anyone who opened the window would have knocked them off.
Why else would they feel free to knock me off?