Jason

“Oh, are you doing magic? Let’s see it, then.”
She sat down. Ron looked taken aback.
“Er — all right.”
He cleared his throat.

“Sunshine, daisies, butter mellow,
Turn this stupid, fat rat yellow.”

He waved his wand, but nothing happened. Scabbers stayed gray and fast asleep.
“Are you sure that’s a real spell?” said the girl. “Well, it’s not very good, is it? I’ve tried a few simple spells just for practice and it’s all worked for me. I’ve learned all our course books by heart, of course.”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone

“Hermione was screaming again: the sound went through Harry like physical pain.”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“Did you see me disarm Hermione, Harry?"
"Only once" said Hermione stung. "I got you loads more then you got me—"
"I did not only get you once, I got you at least three times—"
"Well if you're counting the one where you tripped over your own feet and knocked the wand out of my hand—”
― J.K. Rowling, Harry Potter and the Order of the Phoenix

“I'll fix it up with Mum and Dad, then I'll call you. I know how to use a fellytone now—"
"A telephone, Ron," said Hermione. "Honestly, you should take Muggle Studies next year...”
― J.K. Rowling, Harry Potter and the Prisoner of Azkaban