A highway policeman in the US was doing his rounds along the roads.

During his shift, he pulled alongside a speeding car on the freeway. He glanced over at the driver and promptly did a double take! He was astounded to see that the woman behind the wheel was knitting!

Realising she was oblivious to his flashing lights and siren, the officer angrily cranked down his window, turned on his loudhailer and yelled, PULL OVER!

NO, the woman yelled back. ITS A SCARF!