Well its time to get them back! Go to an everyday kitchen sink. IF you have manuel hose that like comes out or justs is movable, then you can do this prank!

1)Get a rubberband
2)wrap it around the nozzle or "button" to make the water come out of the nozzle head.(so this way if the water preasure was on then, water would be coming out.)
3)put the nozzle head in the direction of where the pray would be standing.

RESULT: Say the "cook" in the house goes to wash their hands, clean things, etc. (just to use the faucet) then when the water is turned on they will be splashed with a load of water on them! hahaha