![[knock on door]
[knock on door]](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
[KNOCK on door]
The Big Bang Theory Season 12, Episode 5

Oh, don't be. You get your hopes up,
I KNOCK them down,
The Big Bang Theory Season 10, Episode 6
![[KNOCK ON DOOR]
[KNOCK ON DOOR]](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
[KNOCK ON DOOR]
The Big Bang Theory Season 8, Episode 6

Yeah, KNOCK it off, Howard!
The Big Bang Theory Season 7, Episode 13

You set 'em up, I KNOCK 'em down.
Good job.
The Big Bang Theory Season 10, Episode 17