
Oh, you make me laugh,
SAD clown.
The Big Bang Theory Season 7, Episode 2

Baby hormones or actually SAD?
The Big Bang Theory Season 9, Episode 20

I'm not SAD. I mean, hello. (CHUCKLES)
The Big Bang Theory Season 10, Episode 15

I don't know, this is all starting to feel
like a SAD attempt to recapture our youth.
The Big Bang Theory Season 10, Episode 15

It's SAD that you know that.
The Big Bang Theory Season 6, Episode 8