“Ron was great,” said Tonks warmly, relinquishing her hold on Lupin. “Wonderful. Stunned one of the Death Eaters, straight to the head, and when you’re aiming at a moving target from a flying broom —”
“You did?” said Hermione, gazing at Ron with her arms still around his neck.
“Always the tone of surprise,” he said a little grumpily, breaking free.

Harry Potter and the Deathly Hallows – J.K. Rowling