"Nothing," Tony replied immediately, pushing up his glasses again then needing to find something to do with his hands. "Everything's fine." He landed on shrugging out of his jacket, to restlessly fold and continue to twist over his arm until he realized he could start on the rest of his clothes as he went, too. "I'm the idiot who's been here for years and, with all of that experience, thought giving the kids homework would be worthwhile. Then a bunch of demons came out of a mirror universe, and I watched one of them almost die, and all I could do for him was tell him to run, and it hadn't even occurred to me that one of those important classes they could have been taking was track and field. Kind of sounds like a waste of time to me."