"Secrecy Sensor. Vibrates when it detects concealment and lies... no use here, of course, too much interference -- students in every direction lying about why they haven't done their homework. Been humming ever since I got here."
The Leaky Cauldron is not associated with J.K. Rowling, Warner Bros., or any of the individuals or companies associated with producing and publishing Harry Potter books and films.
"The Leaky Song" by Brad Mehlenbacher of Draco and the Malfoys