What is the sound of the clock indeed

The clock, which was left by Jack's grandfather, suddenly stops working right one day, so Jack loads it into his car and takes it to a clock repair shop.
In the repair shop, is a little old man who insists he is Swiss, but he has a heavy German accent. He asks Jack, Vat sims to be ze problem?
Jack says, I'm not sure, but it doesn't go 'tick-tocktick -tock' anymore. Now it just goes like 'tick...tick...tick.'
The old man says, Mmm-Hm! and steps behind the counter and walks to the clock.
This little old man turns the flashlight on, and shines it directly into the clocks face. Then he says in a menacing voice, Ve haf vays of making you tock!