
As long as it doesn't originate
in a Russian man's COLON.
The Big Bang Theory Season 8, Episode 22

...a clean COLON is just one less thing
to worry about.
The Big Bang Theory Season 1, Episode 1

A COLON calling card, if you will.
The Big Bang Theory Season 6, Episode 9

You didn't say they couldn't pass through
my COLON first.
The Big Bang Theory Season 8, Episode 18

Oh, yes. In the world of emoticons,
I was COLON, capital D.
The Big Bang Theory Season 3, Episode 1