
I bet that started off as a JOKE...
The Big Bang Theory Season 8, Episode 21

And remember that I laughed
at your "zone zone" JOKE.
The Big Bang Theory Season 12, Episode 14

Is this a JOKE?
Game of Thrones Season 2, Episode 8

That wasn't a JOKE. That was
a legitimate suggestion.
The Big Bang Theory Season 12, Episode 2

- It's a JOKE.
- I don't get it.
The Big Bang Theory Season 1, Episode 2