Muggles' Guide to Harry Potter/Magic/Waddiwasi

Muggles' Guide to Harry Potter - Magic
Waddiwasi
Type	Spell (Charm)
Features	Removes gum
First Appearance	Harry Potter and the Prisoner of Azkaban

Overview

The Waddiwasi charm apparently causes violent removal of chewing gum (possibly among other things) from the place that it is currently stuck.

Extended Description

Professor Lupin uses this spell when he encounters Peeves stuffing chewing gum into a lock. He says that this is a very useful little spell, before he uses it; and it is interesting, because the effect is to fire the chewing gum up Peeves' nostril and send him away, something that many teachers had been unable to do. As to its usefulness, though, it does not seem to be used anywhere else in the books.