TV series example of the word

The Big Bang Theory Season 3, Episode 16
Knock yourself out.

Breaking Bad Season 3, Episode 12
...and they knock a few bucks off her price.

The Big Bang Theory Season 6, Episode 1
You should go to my girl, she'll knock out those sideburns for free.

The Big Bang Theory Season 10, Episode 21
-(KNOCK ON DOOR) - BERT: <i>Hello?</i> Anybody home?

Game of Thrones Season 6, Episode 5
Don't knock it down while I'm gone.