Sometimes, knowing how a magic trick works, especially if it's used as a prank, can make it so much more enjoyable.

Setting up a free standing door in a public place is attention grabbing enough. Someone opening and appearing to walk through the door seems weird, right? But, when the door closes and the person has disappeared, then you've really got someone's attention.

The reactions are everything from surprise, curiosity, disbelief and even fear. Because you're in on the prank, the unsuspecting victims' reactions leave you laughing at how easily they're fooled. If the situation was reversed and you were the person being pranked, how would you react?

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