You mean my CELLO.
The Big Bang Theory Season 1, Episode 5
I guess he forgot that
I play the CELLO.
The Big Bang Theory Season 11, Episode 13
Are you cool
playing the CELLO?
The Big Bang Theory Season 7, Episode 6
Leonard, you'll play your CELLO.
The Big Bang Theory Season 2, Episode 12
...ever to be stuffed
into his own CELLO case.
The Big Bang Theory Season 4, Episode 18