Bruce was out on patrol as Batman one night, chasing two criminals. He lost them for a moment as they entered an alleyway, catching up quickly, only to be met by both of them unconscious on the ground, and you, his child, and also previous Robin, leaning against a wall after have probably just knocking those two thugs unconscious.

Bruce stared at you through his cowl for a moment before speaking, "Hm. Didn't know you were on patrol tonight, too." He spoke nonchalantly.