
having someone live with us
is a SIGN of problems.
The Big Bang Theory Season 10, Episode 18

she thought it
was a bad SIGN
The Big Bang Theory Season 7, Episode 17

Okay. Uh, I'm going to SIGN off now,
The Big Bang Theory Season 10, Episode 11

He's eating, that's a good SIGN.
The Big Bang Theory Season 9, Episode 15

There's a SIGN right there.
The Big Bang Theory Season 6, Episode 5