Yeah yeah, he saw that coming; Remus has always had a knack for skirting around compliments. Sirius smiles anyway, because he knows he's right, that Remus surely made an excellent professor, and will again.

"Mm, I don't know.." he says, leaning back on his hands and squinting up at the familiar ceiling. "Transfig, maybe? I've always been good at that." But the way he says it is noncommittal; much as he enjoys transfiguration, he's not so sure he'd be good at teaching it.