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"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[src]

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.[1]

Behind the scenes

Appearances

Notes and references