John is more eager to be here, much prefers the idea of just spending all day soaking a classroom with Sherlock Holmes than sitting down and studying. He's never particularly enjoyed the studying, although never actually hated it either, but he's done it because he didn't really have much else to do. Didn't allow himself to have much else to do? Even when his friends always had so many other things they did...

Apparently it just isn't interesting enough to him. Most of the time it's just walking and talking, anyway, playing wizard chess maybe, sitting around the fire in the common room. Which he does enjoy from time to time, but sometimes he actually prefers studying. It at least brings something completely new.

This? This isn't studying, but it's still something completely new. So of course he'd rather be doing this.

"Guess I've got a knack for motions to match spells, then," he says, basically bluntly taking credit for it but, well, the motion is his doing.

He figures he can be proud of that. But he did see Sherlock tweaked it a bit too, so he tries to remember exactly how as he fills his cup with water again.

This time, however, when he tries the spell, the cup goes off to join Sherlock's in the corner. Ah, well.