A police officer pulls over this guy who had been weaving in and out of the lanes. He goes up to the guys window and says, Sir, I need you to blow into this breathalyzer tube.The man says, Sorry officer I cant do that. I am an asthmatic. If I do that Ill have a really bad asthma attack.Okay, fine. I need you to come down to the station to give a blood sample. I cant do that either. I am a hemophiliac. If I do that, Ill bleed to death.Well, then we need a urine sample.Im sorry officer I cant do that either. I am also a diabetic. If I do that Ill get really low blood sugar.Alright then I need you to come out here and walk this white line.I cant do that, officer.Why not?Because Im too drunk to do that!