"You'd know," Ianto says in a confident way that's probably intended to be comforting. "There'd be a... whole thing, word powers, you'd definitely know." Oh, was that a response to the bit about it hurting? Right. Well. It shouldn't. Without the whole word thing. "It's just a dream, Johnny," he tries again, a little more grounded, this time. "It doesn't have to mean anything more than you want it to. Could be a spot of arson for arson's sake. Consequence- and fatality-free. And fun." Which must be the purpose of dreams, really, to do all of those things you can't do in the waking world. He holds up the lighter again, offering it this time.