A man is pulled over on the suspicion of drunk driving.

The officer comes up to the window and says "Son, I'm going to need you to take a breathalyzer test."

The man says, "I'm sorry, Officer, I can't do that."

"And why is that?"

"Well, you see sir, I'm an asthmatic. Blowing into one of those things would cause me to have an attack."

The officer says, "Okay then. I'm going to need you to take a blood test."

"I'm sorry, sir, I can't do that either."

"Well, why not?"

"I've got hemophilia. It's this disease where, when you get cut or something, your blood doesn't clot and you just bleed and bleed-"

"I know what it is." The officer snapped. "Get out here and walk the line, then."

The man shakes his head. "I'm afraid I just can't do that, sir."

"Why the hell not? Are you an amputee, too?"

"Nope. Just drunk."