The Alcohol Test

A cop saw a car weaving all over the road and pulled it over.

He walked up to the car and saw a nice-looking blonde woman behind the wheel, and there was a strong smell of liquor on her breath.

He said, "I'm going to give you a breathalyzer test to determine if you are under the influence of alcohol."

She blew up the balloon and he walked it back to the police car.

After a couple of minutes, he returned to her car and said,

"It looks like you've had a couple of stiff ones."

"She turned red, and replied, "You mean it shows that, too?"