[ He smiles back, before looking away again, uncertain as he observes the smoothness of the wall by his side. ]

Just - stuff you'd think twice about. Stuff you'd usually think is a bad idea, or realize it's a bad idea, and so you don't do it. Like, punch someone because they made one stupid comment. Or steal someone else's tools. Something like that. Something you wouldn't usually do.

[ He's done none of these things, but he's done enough. ]