
Well, that's Leo.
The Big Bang Theory Season 1, Episode 10

Leo, you are a very sweet,
really funny guy.
The Big Bang Theory Season 1, Episode 10

Hi, Leo, how are you feeling?
The Big Bang Theory Season 1, Episode 10

Of course not, there's no cousin Leo,
there's no intervention.
The Big Bang Theory Season 1, Episode 10

I am Sheldon's cousin Leo.
The Big Bang Theory Season 1, Episode 10