Blonde Breakdown

A blonde's car breaks down on Interstate 10 one day. So she eases it over onto the shoulder of the road. She carefully steps out of the car and opens the trunk. Out of the trunk jump two men in trench coats who walk to the rear of the vehicle where they stand facing oncoming traffic and begin opening their coats and exposing their nude bodies to approaching drivers...

Not surprisingly, one of the worst pileups in the history of this Interstate occurs. It's not very long before a police car shows up. The cop, clearly enraged, runs toward the blonde of the disabled vehicle yelling, "What the heck is going on here?"
"My car broke down," says the lady, calmly. "Well, what are these perverts doing here by the road?" asks the cop.
And she said...
"Those are my emergency flashers!"