
- Really?
- Yeah. I was at a science-fiction CONVENTION...
The Big Bang Theory Season 8, Episode 20

...I finally arrived at the
Fourth Annual Dixie Trek Convention...
The Big Bang Theory Season 3, Episode 5

Yeah, it's a dinky little CONVENTION
where they sell collectibles
The Big Bang Theory Season 10, Episode 6

Fine, we'll abide
by the Geneva Convention.
The Big Bang Theory Season 4, Episode 19

I'm starting my own CONVENTION.
The Big Bang Theory Season 7, Episode 14