I was going through my closet and came across a peculiar little gadget: wire bent, a rubber band, and a metal washer. I had no idea what it was at first. I thought maybe it was a clip or a trap. But then it occurred to me. It’s a rattlesnake envelope prank. This is the old trick where you stick it inside an envelope so when someone opens it, it pops out and scares them.
The Rattlesnake Envelope Prank is a small spring loaded joke gadget that fits inside an envelope. When you pull back the flap to open the envelope, the gadget springs open and surprises you. The entire joke is the surprise and how quickly it happens.
Most of them are very simple and are using parts to do one single function.
• A wire frame that has been bent to act like a spring
• A rubber band that provides a source of tension
• A washer or a small weight that increases the amount of movement and “snap”
They look like they were made from trash drawer materials and, well, they essentially were.
You compress the device and place it in an envelope so that the envelope will hold it in. Once you have pulled back the flap and/or removed the contents, the tension is released. The wire frame snaps outward and the washer provides the motion. In addition to snapping outward, some versions create a clacking or rattling sound as they spring forward.
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