You mean my CELLO.
The Big Bang Theory Season 1, Episode 5
...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
How do you meet girls playing the CELLO?
The Big Bang Theory Season 6, Episode 18
When I broke up with Penny,
I got back into my CELLO...
The Big Bang Theory Season 4, Episode 3