1. Get up really early and sneak into your victims bathroom and fill their hair-dryer with baby powder. And when they turn it on, their head will be pure white just like an old person!
Before one of your family members takes shower, remove the shower head and place a life-saver candy in it, replace the shower head with the candy now trapped in it. When the person takes a shower he or she will not notice, until they get out and start to dry off the towel will stick to them they will get back in the shower to rinse off... works like a charm.
14. Tell your kids that you just got the test scores from the proficiency tests and then go down stairs and say to your kids your going to go and make copies and then come running / walking and make your face look like you just saw a ghost and say to your kids that whatever your principals name is just spilled coffee on the proficiency tests and they will have to take it again. This could also work with students, if you happen to teach.