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

Sheldon does not have a cousin Leo.
The Big Bang Theory Season 1, Episode 10

Now, look, Sheldon's cousin Leo escaped
rehab and he's in a Motel 8 in Long Beach.
The Big Bang Theory Season 1, Episode 10

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

But beyond that,
I have realized the Leo I described...
The Big Bang Theory Season 1, Episode 10