The Policeman pulled up beside a parked car in the layby at 11.51 pm and motioned with his hand for the man in the driving seat to wind down his window.

"Everything alright?"

"Yes, officer."

The cop saw a young female in a short skirt in the back seat reading a magazine.

"What are you doing?"

"As you can see we're doing nothing."

Funny, thought the lawman. A young couple alone in a warm car and no hanky panky.

"How old are you, Sir."

"Twenty-five."

The cop pointed at the skimpily dressed filly.

"And her?"

"She will be eighteen in nine minutes!"