Proudly showing off his new flat to a couple of his friends late one night the drunk led the way to his bedroom where there was a big brass gong.
“That’s the talking clock” the drunk said.
“How does it work?” they asked.
“Watch” the man said, giving it an ear-shattering pound with a hammer.
Suddenly, someone on the other side of the wall screamed “For fk’s sake you Wanker, it’s ten past three in the fking morning!!!”
LOL, I get it!
They were sharing a room with the guy doing the nightshift for the talking clock 
Yer, that must be it. 
Did he hit the gong or the guy?
J:D
so how does it work then?
:::waiting for punchline:::
J;)
good one