RandomDoorUnlockingEvent is something that often happens in Penbryn Halls. this is due to the fact that:
A. People are mean
and
B. Some Keys in Penbryn open other peoples doors to the ones theyre supposed to.
Generally involves a door being unlocked and / or some "hilarious" prank being pulled on the occupants room.
See also MondayThing and NorseArrysMondayThing