There are two kinds of students. Those who take themselves and their studies far too seriously, and those who do the work needed without stressing out about it all.
This prank may be the best way to quickly and easily identify who belongs to which group.
It involves wearing some really silly shoes that intentionally squeak rather loudly. And then walking through parts of the university that are normally quiet. Such as the library.
Some students react well, taking their heads out of their books for just 10 seconds to have a look and laugh. But others don’t look happy, merely scowling and/or shaking their heads.