
My baby is SAD,
and I'm gonna make him happy again.
The Big Bang Theory Season 8, Episode 18

and get SAD D-list celebrities to appear.
Why?
The Big Bang Theory Season 10, Episode 6

I didn't know what else to do.
He had those big, SAD eyes.
The Big Bang Theory Season 6, Episode 2

but-but you're-you're drunk
and SAD and feeling lost...
The Big Bang Theory Season 7, Episode 12

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