The talking clock

A young lad was proudly showing off his new apartment to a friend.  The college student led the way into the living room where the friend noticed a large gong and hammer sitting against one wall.

“What’s the big brass gong and hammer over there?”, the friend asked.

“That is a talking clock,” the lad replied.

“Really, how does it work?”

“Watch, ” the lad said and proceeded to give the gong an ear shattering hit with the hammer.

Suddenly, a voice screamed from the other side of the wall, “Knock it off, you idiot!  It’s two o’clock in the morning!”