Drive the guards nuts. They'd tear the cell apart looking for a watch.
5 seconds sound clip from Longstreet (1971) - Wednesday's Child sitcom.
You can hear this line at 00:30:38.420 in the Blu-ray version of the TV Series.
Quote context
[...]
- In about a few minutes, we'll go call your friend.
- You know, there's not even a crack in those boards. I can't tell if it's day or night.
- Drive the guards nuts. They'd tear the cell apart looking for a watch.
- But that's all behind me anyway.
- Is it?
- Get this over, I get the money, I can go anywhere I want.
- Well, your friend would probably want to hear your voice.
- Take it easy, will you? You're almost home free.
[...]