Homorphus Charm

The Homorphus Charm is briefly discussed in chapter 10 of "Harry Potter and the Chamber of Secrets", where Professor Lockhart tells the tale of rescuing a village from the Wagga Wagga werewolf to Harry Potter. It is again mentioned in chapter 16 when Professor Lockhart admits to stealing the credit from an Armenian Warlock. It is a matter of debate amongst Harry Potter fans whether or not this charm actually exists or if Gilderoy Lockhart made it up.