I guess he forgot that
I play the CELLO.
The Big Bang Theory Season 11, Episode 13
...ever to be stuffed
into his own CELLO case.
The Big Bang Theory Season 4, Episode 18
Little snarky there,
Cello Lessons.
The Big Bang Theory Season 5, Episode 12
You mean my CELLO.
The Big Bang Theory Season 1, Episode 5
This one birthday,
I came home from my CELLO lesson...
The Big Bang Theory Season 1, Episode 16