A policeman, patrolling near midnight at a local parking spot, saw a couple inside with the dome light on. There was a young man in the drivers seat reading a magazine and a young lady in the back seat knitting.

Stopping to investigate, he walked up to the drivers window and knocked. The young man looked up, cranked the window down, and said,Yes, Officer?

What are you doing? the policeman asked.

Well, sir, Im reading, and my girlfriend is knitting a sweater.

How old are you, son? the officer asked.

Im twenty, the boy replied, looking at his watch. And in about twelve minutes, shell be eighteen.