"Talking Clock" joke

Late one night a drunk guy is showing some friends around his brand new apartment. The last stop is the bedroom, where a big brass gong sits next to the bed.

"What's that gong for?" the friend asks him.

"It's not a gong," the drunk replies. "It's a talking clock."

"How does it work?"

The guys picks up a hammer, gives the gong an ear-shattering pound, and steps back.

Suddenly, someone on the otherside of the wall screams, "For God's sake, you as*hole...it's 3:30 in the god damn morning!"