Sure, anyone can pull off the “salt in the sugar shaker” prank, but it takes true ingenuity to pull of something like this: a door-triggered air horn. Here come the heart attacks!
Take one (1) vuvuzela horn, one (1) air horn and some small quantity of duct tape. Attach air horn nozzle to vuvuzela horn mouthpiece with said duct tape. Blow until ears bleed. Repeat. [ThereIFixedIt via Buzzfeed]
