A German guy approaches a lady of the night.
'I vish to buy sex viz you.'
'ok,' says the girl,'I charge £50 an hour.'
'...ist good, but I must varn you, I am a little kinky.'
'No problem, I can do kinky,'says the girl.
So off they go to her flat, where the German produces four bedsprings and a duck caller.
'I vant zat you tie ze springs to each of your hans unt knees.'
The girl finds this most odd but complies, fastening the springs as he had said to her hands and knees.
'Now you vill get on your hans unt knees.'
She duly does this, balancing precariously on the springs.
'You vill please to blow on ze kvacker as I make love to you.'
She finds this odd, but figures it's harmless (and the guy is paying).
The sex is fantastic, as she is bounced all around the room by the energetic German, all the time honking on the duck caller.
Her climax is the most intense that she has ever experienced and it is several minutes before she can speak.
'Wow, that was totally amazing, what do you call that position ?'
'Ah' says the German, Zat is ze.....................
'Four Sprung Duck Technique.'