
a Helmet of Confusion spell
on Billy the Kid's cowboy hat?
The Big Bang Theory Season 5, Episode 10

This is Billy the Kid
we're talking about.
The Big Bang Theory Season 5, Episode 10

Jack and Billy.
Game of Thrones Season 2, Episode 7

Sorry. I know how you hate it
when I call you Billy.
Westworld Season 2, Episode 9

CUOCO:
Billy Bob Thornton. Does Penny live here?
The Big Bang Theory Season 12, Episode 24