
Time-travel JOKE. It's not... Never mind.
The Big Bang Theory Season 1, Episode 14

I was making a JOKE.
The Big Bang Theory Season 3, Episode 4

It's a comic book JOKE.
The Big Bang Theory Season 7, Episode 13

Laugh at their JOKE, touch their arm...
The Big Bang Theory Season 8, Episode 7

People usually start
a meeting with a JOKE,
The Big Bang Theory Season 7, Episode 15