
Ignore him, he's just cranky
because Bert from the GEOLOGY lab
The Big Bang Theory Season 10, Episode 9

Why do we have a GEOLOGY book?
The Big Bang Theory Season 7, Episode 20

How did you figure out
that it was the GEOLOGY lab?
The Big Bang Theory Season 7, Episode 3

We are directly underneath
the GEOLOGY lab,
The Big Bang Theory Season 5, Episode 17

Geology. Oh!
The Big Bang Theory Season 7, Episode 20