Re: Pranking is abuse
Sometimes, yes - I have heard some truly dreadful stories (that I won't even describe here).
It can depend on the intention, though: back in the day, when managers were real managers, we used to have Friday afternoon office footy sessions (with a foam ball), using the boss's office as the goal. He was ex-navy, and understood it was just letting off steam (and also knew that we would come up with the goods when he needed), so he arranged to be at meetings on Friday arvo.