I'm not aware of any social CONVENTION
that requires you to intervene at all.
The Big Bang Theory Season 1, Episode 17
...to a sci-fi CONVENTION
in Jackson, Mississippi...
The Big Bang Theory Season 3, Episode 5
I know you're not ready and I don't want you to
say it just because social CONVENTION dictates...
The Big Bang Theory Season 8, Episode 8
Did you tell them that
you're holding your CONVENTION
The Big Bang Theory Season 7, Episode 14
Fine, we'll abide
by the Geneva Convention.
The Big Bang Theory Season 4, Episode 19