|"Are you a wizard or not?"
The title of this article is conjectural. Although it is based on canonical information, the actual name is a conjecture and may be supplanted at any time by additional information released from canonical sources. If this occurs, please move this page to the appropriate title.
The Horn tongue hex (incantation unknown) was a spell that turned the target's tongue into a horn.
Harry Potter came across it while perusing the index of Basic Hexes for the Busy and Vexed in search of a way to overcome the dragon he knew he would have to face in the First Task of the Triwizard Tournament. He quickly ruled it out, however, realising it would only give the dragon yet another way to attack him.
- Harry Potter and the Goblet of Fire (First mentioned)