A fictional spell from the Harry Potter series. Its supposed to make objects hoover in midair; The Levitation Spell.
Ron: Wingardium LeviosAA!
Hermione: Stop! Stop! Stop! You're going to take someone's eye out! Besides, you're saying it wrong. It's LeviOsa, not LevioSA.
Ron: You do it then if you're so clever. Go on, go on.
Hermione: Wingardium Leviosa!