Kidneys for sale

A male flight attendant was stopping over at Japan.
He went to a local bar where a Japanese man and woman approached him. They chatted and had a drink, The man gave him an old traditional Japanese drink. The next memory the flight attendant had, was when he woke up in a bath of ice with a pain in his stomach. He managed to pull himself out the bath and phone the police. He told them everything he could remember, the policeman described the two people and the man said that's what they were like. The policeman calmly told him to get back into the bath and sit there till the police and ambulance had arrived, The man's kidneys had been removed.