Does NASA know you're using that thing
as a NAPKIN holder?
The Big Bang Theory Season 4, Episode 1
Yeah, he's writing it on
a NAPKIN like in the movies.
The Big Bang Theory Season 12, Episode 17
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
If you like, starting tomorrow
I'll add a guest NAPKIN...
The Big Bang Theory Season 3, Episode 5
Ask him for a NAPKIN, I dare you.
The Big Bang Theory Season 1, Episode 2