How to Booby Trap a Styrofoam Cup!

Intro: How to Booby Trap a Styrofoam Cup!

There's not much to this prank,  you take an ordinary Styrofoam cup and cut off the bottom, you then rub grease all over edge and place it on the table....  Check out the full video tutorial to get full instructions and to see the hilarious Demo!
 

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