
As a bit of an ELEPHANT seal buff...
The Big Bang Theory Season 8, Episode 23

And the answer was ELEPHANT.
The Big Bang Theory Season 4, Episode 24

It was kind of the ELEPHANT
in the room, so...
The Big Bang Theory Season 6, Episode 19

What was he, a bad ELEPHANT
who died and went to hell?
The Big Bang Theory Season 5, Episode 10

ELEPHANT?
The Big Bang Theory Season 7, Episode 2