
H-Him and
his GEOLOGY.
The Big Bang Theory Season 12, Episode 24

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

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

to the GEOLOGY lab
or the chemistry lab.
The Big Bang Theory Season 7, Episode 3

Well, GEOLOGY
The Big Bang Theory Season 7, Episode 20