Colonel Reichman, an interrogation specialist for the German army, was walking around in a quaint little Swiss village one day during WWII. He spots a little shop selling clocks and watches and decides to enter.
Inside, the owner, a lady standing behind the counter, immediately recognizes who he is and welcomes him into the shop, asking how she can be of assistance.
"Frauline,” he starts "Deez are all very nice little clocks and vatches you have in here, but ze von I am interested in is zat big grandfazer clock you have outside above your door.”
“Nein colonel, I am sorry, but zat grandfazer clock is not for sale. It is a showpiece of ze little shop." she answers.
"Frauline, don’t gif me that! You know who I am, and ven I say I vant zat grandfazer clock, you give me ze bloody grandfazer clock!" he retorts impatiently.
"Colonel, vhy vould you vant zat clock anyvay? It is broken. It does not vork!" she says.
“Vhy frauline? Vhat is wrong with ze clock?" he asks.
"Colonel, ze pendulum only svings von vay, ze bloody thing only goes TICK, TICK, TICK and it cannot go TOCK." she answers.
He gets a grin on his face and says "Haha, don't you vorry about zat frauline! Vhere ve come from, ve haf vays of making it TOCK!"