Paddy invites his pal Murphy round to see his new flat.
On the wall is a huge gong.
Murphy asks . "Whats that?"
Paddy replies "It;s my talking clock."
Murphy says, "How does it work?"
Paddy gets a big hammer and gives the gong a mighty whack.
A voice through the wall shouts, "You noisy twat, It's half past ten at night!"