A policeman in Sydney, Australia, pulled over a driver who had been weaving in and out of the traffic.
He approached the car window and said, "Sir I need you to blow into this breathalyser."
The man reaches into his pocket and produces a doctor's note.
On it was written: "This man suffers from chronic asthma. Do not make him perform any action that may leave him short of breath."
The policeman said, "Okay then I need you to come and give a blood sample."
The man produced another letter.
This one said: "This man is a haemophiliac. Please do not cause him to bleed in any way."
So the officer said: "Right, I need a urine sample then."
The man produces a third letter from his pocket.
It read: "This man plays Cricket for England, please don't take the piss out of him”