Peskipiksi Pesternomi

Peskipiksi Pesternomi is a spell that, according to Gilderoy Lockhart, is supposed to round up pixies. It is first used in Harry Potter and the Chamber of Secrets in Lockhart's second-year Defence Against the Dark Arts class. It had no effect on the pixies that Lockhart had loosed in the classroom, presumably because he made it up on the spot.