
I've extended a friendly,
CASUAL greeting.
The Big Bang Theory Season 3, Episode 10

Is there some new kind of Casual Friday
I don't know about?
The Big Bang Theory Season 2, Episode 5

They used the money as the excuse for
a common robbery, but it wasn't CASUAL.
Money Heist Season 1, Episode 4

Well, it's very CASUAL. No dress code or...
The Big Bang Theory Season 2, Episode 10

...to provide Amy with conversation
and CASUAL physical contact.
The Big Bang Theory Season 6, Episode 1