A driver was swerving all over the road...

A driver was swerving all over the road...

... then was pulled over by a police officer. The police officer knocked on the door and said,

"Sir, please blow into this machine"

"Sorry officer, I can't"

"Why not?"

"Because I have asthma, and it might trigger an asthma attack"

"Okay, could we get a blood sample then?"

"Sorry officer, I can't"

"Why not?"

"Because I have diabetes, and it might upset my blood sugar level"

"Okay, then just step outside your car and walk in a straight line"

"Sorry officer, I can't"

"Why not?"

"Because I'm drunk"