Remus squirmed as the cleansing spell tickled over them. It wasn't an unpleasant feeling, just an unusual one.
The idea of 'returning the favor' made him squirm in a different sort of way. "Mmm, maybe I will," he chuckled. Ah, but he should eat some more. "Well, I got a bit distracted," he pointed out, grabbing the other sandwich and taking a bite.