He grins, sticking his tongue out at her, briefly. "Be proud. You are just lucky that Milliways does not have rules beyond the three. I would catch you for copyright infringement, otherwise."

Not that he'd ever really do that. Showing off is a natural reaction to being able to do something that others can't, in Yrael's opinion. It means that he can cite it as out of his control when he shows off, being oh so snarky and smug. It also means that he forgives others when they show off. But still, teasing is good.