I've extended a friendly,
CASUAL greeting.
The Big Bang Theory Season 3, Episode 10
No, I'm all done with CASUAL sex.
The Big Bang Theory Season 2, Episode 2
There's a difference
between CASUAL and weird.
The Big Bang Theory Season 11, Episode 8
Right. Whereas Jewish mothers take
a CASUAL la-di-da approach to their sons.
The Big Bang Theory Season 4, Episode 23
...and engage in CASUAL physical contact...
The Big Bang Theory Season 6, Episode 1