Ding dong

After closing time at the bar, a drunk was proudly showing off his new apartment to a couple of his new friends.
He led the way to the bedroom where there was a big brass gong and a mallet.
"What's up with the big brass gong?" one of his guests asked.
"It's not a gong. It's a talking clock," the drunk replied.
"A talking clock? Seriously?"
"Yup," replied the drunk.
"How's it work?" the friend asked, squinting at it.
"Watch," said the drunk man. He picked up the mallet, gave the gong a heavy whack, and stood back.
The three stood looking at each other a moment.
Suddenly, a voice from the other side of the wall cried out, "YOU ASSHOLE! IT'S THREE O'CLOCK IN THE MORNING!"