Answer: AN OVERCOAT FOR TWO PEOPLE  

Ross and a friend were walking down the street when it started to rain. Ross was wearing a coat, but his friend wasn’t. As the rain came down and his friend got wetter and wetter, Ross got an idea for such emergencies.

Ross’s coat looks very ordinary most of the time. But when it rains or snows, the wearer could undo a series of clasps, expand the coat, and invite a friend inside. Ross felt his coat would be particularly handy at outdoor sporting events.

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