A funny funny joke!!

 This is a very funny story. I read something similar a few days ago. I am writing here my version.

Rajan was suffering from severe headache. He applied for short leave to see his Doctor. His boss advised  him  to go the hospital nearby. They had installed a computer, which could accurately diagnose every disease.The fees was only twenty rupees. Rajan went to the hospital . The doctor on duty asked him to pour a bottle of his  urine in the computer. Rajan did , as advised by the doctor. As soon as he poured his urine in the computer, there was some sound inside the computer and a paper slip slide outside. Rajan read that slip. On the slip it was written
,"You are suffering from severe migraine. 
You must take good rest.
 Avoid oily food.
Sleep early at night." 
Come after one week for follow up action.
  Rajan was  very much impressed. He wondered how the"Doctor" computer could diagnose so accurately. An idea came to his mind. Next week when he went to the computer, he poured some tap water, his daughter's urine , his wife's urine  and  some oil from his car in a bottle.. As prescribed by the Doctor, he poured the concoction inside the computer, paid twenty rupees and waited for the result. The slip came out. On the slip ,the following words were written. 
 The water tank of your house needs cleaning.
Your teen aged daughter is  pregnant.
Your wife  had five lovers in the last six months.
The radiator of your car is  rusting. the oil needs to be changed.
 Rajan  fainted and fell down.