A teenager moved away from his parents to become a student. Proudly showing off his new apartment to a couple of his friends late one night, he led the way to his bedroom where there was a big brass gong.

"What's that big brass gong?" one of the friends asked.

"It's not a gong. It's a talking clock," the teenager replied.

"A talking clock? Seriously? Asked his astonished friend.

"How's it work?" the 2nd friend asked, squinting at it.

"Watch me," the teenager replied. He picked up a hammer, gave it an ear-shattering pound and stepped back.

The three stood looking at one another for a moment. Suddenly, someone on the other side of the wall screamed: "You idiot, it's ten past three in the morning!"