
Hang on, let's talk about it. This is a
National Science Foundation EXPEDITION.
The Big Bang Theory Season 2, Episode 23

The Arctic EXPEDITION
was a remarkable success.
The Big Bang Theory Season 3, Episode 1

Should a guy with no name
and a red shirt really go on an EXPEDITION?
The Big Bang Theory Season 6, Episode 24

Listen, I don't know if I can go
on the EXPEDITION.
The Big Bang Theory Season 2, Episode 23

...the invitation
to join the Arctic EXPEDITION.
The Big Bang Theory Season 2, Episode 23