The Mossad Reappearing Ink Pen is just like the one secret agents use. All you have to do is write the secret message with the ink pen, now use your hair dryer and heat the paper until the message disappears. Now, in order to see the message, the recipient must put the message in the freezer and the message will appear again. The pen is an awesome gel pen in which the ink will disappear every time it get hot and then reappear when it gets cold, so the message can be passed around to all the spies in the neighborhood.

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