This prank shoots a spray of water on your unsuspecting victim when they turn on the sink.
Step 1: Materials
All you need is a sink sprayer (first photo) and a rubber band (preferably the same color as the sprayer).
Step 2: Pulling It Off
Wrap the rubber band around the handle so the trigger is held down. When someone turns on the sink the already pulled trigger will shoot water at them. They have to turn off the faucet and take off the rubber band to stop the spray. Make sure the water is not too hot or too cold.