
That's not a bad SIGN.
The Big Bang Theory Season 2, Episode 1

Jack, no SIGN of Pinkman.
Breaking Bad Season 5, Episode 14

Sign it in a way
that I sound humble
The Big Bang Theory Season 5, Episode 4

Sign the bottom, answer
the questions, bring it back. Next.
The Big Bang Theory Season 2, Episode 5

I got asked to SIGN autographs there.
The Big Bang Theory Season 10, Episode 6