Benjy jumped when hit with the hat and fumbled with it for a moment before regaining enough motor control to tug it over his head. "I am not putting on a crotch box, Celia. You're mad, or a Ministry spy, and now that I've got my hat back I'm taking my book and leaving because--"
The rest of his sentence, whatever reasoning Benjy could come up with, was cut off by a surprised shout of pain and, "CELIA YOUR CAT IS TRYING TO KILL ME!" when Grass stuck his claws right into Benjy's arms.