A German guy abroad approaches a local lady of the night.
"I vish to buy sex viz you." he says.
"OK," says the girl, "It will be $50 an hour."
"..ist goot, but I must varn you, I am a little kinky."
"No problem," she replies cautiously, "I can do kinky, but it will be double the price."
He agrees and off they go to the girl's flat, where the German produces four large springs and a duck caller from his briefcase.
"I vant zat you strap ze springs to your hans und kneeses."
The girl finds this most odd, but complies, fastening the springs as he had said, to her hands and knees.
"Now you vill get down on your hans und kneeses."
She duly does this, balancing precariously on the springs.
"You vill now please to blow zis kwacker as I make love to you."
She finds it very odd, but figures it's harmless (and the guy is paying.)
The sex is fantastic, she is bounced all over the room by the energetic German, all the time honking on the duck caller. The climax is the most sensational that she has ever experienced and it is several minutes before she has enough breath to say,
"That was totally amazing, so what do you call that position?"
"Ah," says the German .....
"zat is ze....
famous German four-sprung Duck technique"