How to Set up a faucet sprayer for a prank
This trick is really simple, as long as you have the necessary equipment to set it up. The main thing you need is a sink that has one of those dish sprayers that work automatically if they're being squeezed. Then, just wrap invisible tape around it to keep it engaged, and wait for your victim to try and use the sink. They're most likely in for a spray to the crotch.