When I was a student, and when I was supervising
students, practical
jokes were _expected_. There were rules, like no permanent damage (to
physical items or data (like computer files)). Nothing against the law.
Nothing _too_ dangerous.
And yes, I've been caught by practical jokes. And yes, I laughed
afterwards - and then played a joke in return.
Like tossing charged capacitors across the room to them?
Or hooking a LARGE choke and a battery to a doorknob?
I would never do such a thing.:)
Dan