Muffet and the blueberry muffin

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Muffet eats one of the muffins she has made for her guests. The muffin she eats is delicious but something goes wrong. Muffet starts inflating and getting blue. And thinking this would not get worse she floats like a balloon. Looks like her guests have to wait for Muffet to come back. Two popular inflation based by the classic blueberry inflation from Charlie and the chocolate factory and from Harry potter's aunt marge inflating like a balloon.
Undertale is owned by Toby Fox