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Watch this step-by-step demonstration to see exactly how to fold and snap your paper popper for the loudest sound: How to Make a Paper Popper! (Easy and Loud) - Rob's World Rob's World YouTube• Dec 2, 2012

: Turn the paper over so the folded bar is on the back. Fold the entire paper in half vertically, so the "smooth" side is on the outside and the folded bar is on the inside. pop_design_somebody_called_me_tonight

: Grip the bottom corner of the bar (not the flaps) and thrust your arm downward quickly. The air will force the flaps out, creating a loud snapping sound. Scientific Principle Watch this step-by-step demonstration to see exactly how