A man is lying in bed with his wife one evening and all of a sudden the phone rings. 

The man picks up and two seconds later his wife hears him shout down the line.

"WELL HOW THE HELL SHOULD I KNOW I'M NOT THE BLOODY WEATHERMAN!"

He then hangs up.

His wife asks "Who on earth was that dear?"

"Not sure," replies her husband.  "It was some twat asking if the coast was clear."