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Who knew you could use science to play pranks? Flubberstein, that’s who. The mad scientist has invented possibly the best way to have fun with science: use it to play practical jokes! This crazy kit comes with envelope, envelope seal, electronic sound card, a jar of gooey green muck, a squirting flower, disappearing ink and an activity book. It’s everything you need to become the Einstein of monkeyshines!
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