The wife picked up the phone

A married couple were asleep when the phone rang at 2 in the morning, the wife undoubtedly blonde, picked up the phone, listened a moment and said,

“How should I know, that’s 200 miles from here?” and hung up.

The husband said, “Who was that?”

The wife said, “I don’t know, some young woman wanting to know ‘if the coast is clear.”