Dutiful But Dumb1941

Moe Click:
[surprised to see all the watches on his arm] Hey, what's the idea of the 3 watches?

Curly Cluck:
That's the way I tell the time.

Moe Click:
*How* do you tell the time?

Curly Cluck:
This one runs 10 minutes slow every 2 hours. This one's 20 minutes fast every 4 hours. The one in the middle's broken, it stopped at 2 o'clock.

Moe Click:
Well how do you tell the time?

Curly Cluck:
I take the 10 minutes on this one, and subtract it from the 20 minutes on this one, haha, then I divide by 2 in the middle.

Moe Click:
Well, what time is it now?

Curly Cluck:
[takes a stopwatch from his pocket] Oh uh, 10 minutes to 4...