A college student had some friends over to show off his new apartment, when one of them asked, “Hey, what’s the big gong and mallet for”?
“That’s the talking clock!”, he replied.
“How does it work?”, asked the friend?
Without a word the college student took the mallet and hammered the gong as hard as he could. A voice then immediately rang out, “Knock it off! It’s three in the morning!!!”