And the answer was ELEPHANT.
The Big Bang Theory Season 4, Episode 24
And I will return to New Delhi in triumph
atop a bejeweled white ELEPHANT.
The Big Bang Theory Season 6, Episode 20
Yeah, he electrocuted
an ELEPHANT named Topsy
The Big Bang Theory Season 11, Episode 8
It was kind of the ELEPHANT
in the room, so...
The Big Bang Theory Season 6, Episode 19