
...to a sci-fi CONVENTION
in Jackson, Mississippi...
The Big Bang Theory Season 3, Episode 5

I believe that social CONVENTION dictate
you not arrive empty-handed.
The Big Bang Theory Season 3, Episode 6

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

It's a non-optional social CONVENTION.
The Big Bang Theory Season 1, Episode 16

like Sheldon and start their
own comic book CONVENTION?
The Big Bang Theory Season 7, Episode 14