Brian blinked at the man, shaking his head incomprehensively. Why would you name something half-dark? Unless you were talking about how the physical colour of the potion was half dark and half light, which made about zero sense. Nothing magical really did, though. Make sense. Anyway, since anything goes in the wizarding world, maybe he'd make a chance at it. Oh, and a potion to induce an emotion. Would a feeling count?

Raising his hand, he made an attempt at answering. If it acquired him house points, he was ALL for it. "Is it half-dark because it doesn't alter all of your emotions but kinda leaves maybe half of your true emotions there as an anchor? It sounds confusing, though, having conflicting emotions. Is the real set of emotions just dormant? If that's even how it works." And he would shut up now, before he made a further fool of himself in front of the whole potions class.

"Oh, and fatiguing infusion makes you really, really tired." There. Now, he was done.