A bloke takes his mates back to his new flat, after a few more beers
One of the boys asks him: "What's the big brass gong for?"
The host says: "It's my speaking clock
"How does it work?"
"I will show you" and he hits it full pelt with a club hammer!
A voice from next door yells: "For fucks sake you cunt, its twenty to three in the morning!"