A police officer pulled over a driver who'd been weaving in and out 

 of the lanes.

He approached the car window and said, 'Sir, I need you to blow

 into this breathalyser tube?

 

The man immediately reached into his pocket and produced a

doctor's note.

On it was written: 'This man suffers from  asthma. Please don't

 make  him perform any action that'll leave him short of breath.

 

The officer said, 'OK then, I need you to come and give a blood

sample.'

 

Straightaway, the man produced another letter.

  This one read: 'This man  is a haemophiliac. Please do not cause

 him to bleed in any way.'

 

So the police officer said, 'Right, I need a urine sample then.'

 

The man produced a third letter from his pocket.

 

  It read, "This man plays for  the English Cricket Team. Please

don't  take the piss out of him."