The spells are made up. I have met people who assure me, very seriously, that they are trying to do them, and I can assure them, just as seriously, that they donโt work.
J. K. RowlingWell, usually when a person shakes their head," said McGonagall coldly, "they mean 'no.' So unless Miss Edgecombe is using a form of sign language as yet unknown to humans.
J. K. RowlingAre you trying to weasel out of showing us any of this stuff?" said Zacharias Smith. "Here's an idea," said Ron loudly, "why don't you shut your mouth?" "Well, we've all turned up to learn from him, and now he's telling us he can't really do any of it," he said. "That's not what he said," said Fred Weasley. "Would you like us to clean out your ears for you?" inquired George, pulling a long and lethal-looking metal instrument from inside one of the Zonko's bags. "Or any part of your body, really, we're not fussy where we stick this," said Fred.
J. K. Rowling