You mean my CELLO.
The Big Bang Theory Season 1, Episode 5
clearly you've never
seen me play the CELLO.
The Big Bang Theory Season 7, Episode 6
...ever to be stuffed
into his own CELLO case.
The Big Bang Theory Season 4, Episode 18
...building computers
or practicing your CELLO...
The Big Bang Theory Season 8, Episode 22
Leonard, I didn't know
you played the CELLO.
The Big Bang Theory Season 1, Episode 5