I didn't know what else to do.
He had those big, SAD eyes.
The Big Bang Theory Season 6, Episode 2
For example, I cry because
others are stupid and it makes me SAD.
The Big Bang Theory Season 3, Episode 10
Which was SAD,
because we were playing Scrabble...
The Big Bang Theory Season 8, Episode 4
You can't tell the sick
from the SAD. Mm.
The Big Bang Theory Season 7, Episode 22
to create a ring that would
make him happy when he was SAD.
The Big Bang Theory Season 7, Episode 20