When you die, go try to convince your best friend that you faked your death and are living off the grid. Then try to hug them and see their reaction.
Okay but youve never seen someone panic thinking about the stain only to see their shock and confusion once it goes away. Blunting or breaking the ends of someones pencils so they have to sharpen them all over again
Foldin' someone's knees using yer own is always fun~ (Except the one time someone did it near the stairs and the guy was sent to the hospital)