With Two Needles

A California highway patrolman pulled alongside a speeding car on the crowded freeway. Glancing at the car, the officer was astounded to see that the young blonde woman behind the wheel was knitting.

She was oblivious to his flashing lights and siren, so the trooper cranked down his window, turned on his bullhorn
and yelled, "PULL OVER!"

"NO," the blonde woman yelled back. "IT'S A SCARF!"