Bake a cake that looks delicious on the outside. Then replace the sponge
layers with actual dish sponges. Serve it to unsuspecting friends or family and watch their
reactions when they try to cut into it.
Carefully remove the cream filling from oreos and replace it with
toothpaste. Offer these "oreo cookies" to your friends or family as a sweet treat, and enjoy
their shocked faces when they take a bite.
Scatter some fake bugs, like plastic cockroaches or spiders, in
unexpected places such as drawers, cabinets, or under pillows. Sit back and watch as people
freak out.
Cover the bottom of your co-worker's mouse with transparent tape. They
will be left wondering why it is not working, only to find out it's due to an invisible
barrier.
Cover the sensor on your friend's TV remote with a small piece of tape.
They will be confused when they cannot change the channel or adjust the volume, no matter how
many times they press the buttons!
Set several alarms on your friend's phone that ring at unpredictable
moments during the day. Remember to brace yourself for a possible payback!
Find a spill-proof cup or container and fake an accidental drink spill
on someone. Observe their reaction as they initially panic, only to realize they are completely
dry.