The clock in the gentleman's stomach keeps perfect time.
7 seconds sound clip from the Blackbeard's Ghost (1968) movie soundboard.
You can hear this line at 00:16:28 in the Blu-ray version of the movie.
Quote context
[...]
- Two hundred dollars, once! Two hundred dollars, twice! Sold! To the nice young gentleman in back.
- Lot number 3. Here, we have a fascinating piece from colonial times.
- The clock in the gentleman's stomach keeps perfect time.
- Yeah.
- Nope.
- Might stick around a while, huh?
- Might.
- We'll see each other again. Good night.
- Fine. Much better than we'd expected. Thank you.
[...]