
C-O-N...
The Big Bang Theory Season 1, Episode 6

that can get a person uninvited
to this year's Who Con.
The Big Bang Theory Season 5, Episode 14

A very long CON indeed.
The Big Bang Theory Season 12, Episode 7

Comic Con?
The Big Bang Theory Season 5, Episode 7

at Comic Con.
The Big Bang Theory Season 5, Episode 7