A cop pulls over a blonde because her car is weaving all over the road. When he bends down he can smell booze on her breath.
"I'm going to give you a breath analyzer test to see if you're under the influence of alcohol", he says.
She blows up the balloon, then he walks it back to the police car to run the test.
He comes back to her car and says, "It looks like you've had a couple of stiff ones."
"You mean it shows that as well?" she gasps.