I can't !

"A policeman pulls over a driver for swerving in and out of lanes on the highway. He tells the guy to blow a breath into a breathalyzer. 'I can't do that, officer.' 'Why not?' 'Because I'm an asthmatic. I could get an asthma attack if I blow into that tube.' 'Okay, we'll just get a urine sample down at the station.' 'Can't do that either, officer.' 'Why not?' 'Because I'm a diabetic. I could get low blood sugar if I pee in a cup.' 'Alright, we could get a blood sample.' 'Can't do that either, officer.' 'Why not?' 'Because I'm a hemophiliac. If I give blood I could die.' 'Fine then, just walk this white line.' 'Can't do that either, officer.' 'Why not?' 'Because I'm drunk.'"
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