
The famous NAPKIN
The Big Bang Theory Season 12, Episode 24

It's nice to have dinner with a boyfriend
of Penny's that knows how to use a NAPKIN.
The Big Bang Theory Season 4, Episode 9

- Could you grab me another NAPKIN?
- Sure.
The Big Bang Theory Season 3, Episode 10

What NAPKIN?
The Big Bang Theory Season 12, Episode 17

If you like, starting tomorrow
I'll add a guest NAPKIN...
The Big Bang Theory Season 3, Episode 5