Boom! They knocked again. Dudley jerked awake. — J.K. Rowling

'One can never have enough socks,' said Dumbledore.

"Harry — yer a wizard."

Wingardium Leviosa!' he shouted, waving his long arms like a windmill.

'You're saying it wrong,' Harry heard Hermione snap. 'It's Wing-gar-dium Levi-o-sa, make the "gar" nice and long.'

'You do it, then, if you're so clever' Ron snarled.

Hermione rolled up the sleeves of her gown, flicked her wand and said, Wingardium Leviosa!'

Their feather rose off the desk and hovered about four feet above their heads.