Hehehe... Do you know the little spray thing on the faucet? The ones that are seperate from the faucet... Well.. I tie a rubber band around it and point it to were i think someone would be...
Then when they go to turn on the water to wash their hands, they get soaked! EEEEp... Last year i did it for my om befor she got home...... but my brother was still home and getting read for work..... HE TURNED IT ON! Luckily, he's a "joker" like me and he got a kick out of it! lol