Oh my goodness. If it is a boy then put Saran wrap on the toilet seat. Girl or boy you can Saran wrap a whole door way. They go to walk in and bam!!!! They hit the Saran wrap and bounce back. It is hilarious. Make sure u video it somehow. U will laugh
if she has a cell phone take a old on like hers and smash it and say it was her phone, or fill up the bathtub with cherry kool-Aid and lay in it and act like u r dead, or as my friend said again put a mask on and act like a killer
Take a full sized cookie sheet and put about a half inch of water in it and set it on a table. Tell a group of kids to gather around it and because you are going to show them a trick. Gold a decoy item in one hand as if it is part of the trick in order to distract them. As you start the trick have them gather closely. Tell them they need too look real closely at the water. Draw them in so that they are real tightly gathered around with their heads really close. Then slap your hand really hard in the middle of the pan causing the water to go everywhere. It will startle the crap out of then and they will be so stunned by how wet you got them. They won't even think about being mad. They will think that it is so funny that they got suckered into an obvious trick. Works Everytime. They be we see it coming.
we use to always do this to my little 10 year old sister! we would wait untill she falls asleep then draw a red streak of marker on their arm and put streaks of red underneath it! then put a butterknife in their other hand and wake them up and they will scream! It is hilarious!!