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."