"Just killing Time"  
Billy, a policeman, was patrolling a local parking spot that overlooked a golf course. He drove by and saw a couple inside with the dome light on. There was a young man in the driver's seat reading a computer magazine and a young lady in the back seat knitting.

Officer Billy had to stop to investigate, since this was something unusual. He walked up to the driver's window and knocked, "Hey, what are you doing and what is your name?"

The man looked up, cranked the window down, and said, "My name is John and this is my girlfriend in the back seat."

"OK, so what are you doing?" Officer Billy asked.

"What does it look like?" answered John. "I'm reading a magazine."

Pointing towards the young lady in the back seat, Officer Billy asked, "And what is she doing?"

John looked over his shoulder and replied, "What does it look like? She's knitting, sir."

"And how old are you?" Officer Billy then asked John.

"I'm 25," John replied.

"And how old is she?" asked Officer Billy.

John looked at his watch and said, "Well sir, in 12 minutes she'll be 18."