I can`t do that, officer

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."