Bat-Bogey Hex of 1972

"Recent cases include the Bat-Bogey Hex of 1972 which affected an entire class at Hogwarts."

- Student's answer on O.W.L. exam paper

An incident referred to as the Bat-Bogey Hex of 1972 was mentioned by a Hogwarts School of Witchcraft and Wizardry on his or her Theory of Charms O.W.L. exam paper.

Behind the scenes

 * Coincidentally or not, Remus Lupin, Peter Pettigrew, Sirius Black, and James Potter were attending Hogwarts in 1972 (depending on the month this incident took place, either on their first or second year).