“A counterfeit is a knock off. A cat’s tail swiping a knickknack placed perilously close to the edge of a shelf is also a knock off. How do you think my heart got broken?”

“I yelled at my cat to knock it off, and sure enough, he did. And it broke.”

“A brick could replace the cardboard bill on a baseball cap. On a windy day, no gust will knock your hat off.
”

“I’ve been meaning to go shopping for boxing gloves, but I’ve been putting it off. I just need to knock it out and be done with it.”

“A brick could be used to knock out the tooth of a giant, and then used as a replacement for that very tooth it knocked out. I’ll tell you what, you knock it out, and I’ll put the new one back in—and I’ll charge a fee for both transactions.
”

“I wonder if rooms in an insane asylum have Do Not Disturb signs for the doors. I should hope not, because knock or no knock, every occupant in those rooms is already disturbed.”

“Last night I placed a handwritten note on the front door of my neighbor’s house that said, “Sorry, we’re closed. Come back tomorrow after 9 am.” I wouldn’t have done it had I known he’d knock on my door and ask to spend the night because he thought I was open.
”