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Are you skinny, but married a fatty? Sony's new patent for bathtubs allows the interior walls to become wider, narrower, deeper or shallower at will. Their powers come from the strong flexible polymer walls that are backed with elastic cushioning panels. There's no chance of spillage due to a water sensor that measures how full the tub is and prevents adjustments that decrease volume. Now you and the misses can enjoy bath time together. Try not to suffocate.

Shape-shifting bath [NewScientist]