Lafayette's decision isn't hard. The first option -- too complicating. The second, how the fuck is he supposed to decide in a split second every time? It's the third option that Lafayette chooses, focusing on the results that he wants above all else.

And it still doesn't work.

Lafayette ends up on his ass in the pillows - thank Christ for pillows - muttering in surprise. Something, he's not sure what, had shot out of Hermione's wand and hit him, After that, his legs had gone weak, and he found himself in a pile.

"Seriously?" he asked her. He hopes she has some way to un-wibbly him. "Locomotor wibbly?"