Unless you’re Ethan Hunt on a Mission: Impossible, you probably don’t need the Mossad Pen, the ink of which has the capability to quickly transform into a non-visible format. Still, you can impress your easily astounded drinking buddies by performing the ever-popular disappearing act. To render the ink invisible, just run a hot blow dryer over the paper. It seemingly “vacuums” the ink right off the page. Whenever you want the original writing to reappear, just place the paper in your kitchen freezer, and voila! This message will self-destruct in 10 seconds.

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