[Rich must have been doing it out of some sense of affection, considering how he's acting around the children. Even now, when one strays from the group, he usually gives them a little hug or pat on the head before sending them on their way. If Aziraphale had been hear earlier, he would have likely heard the nicknames he had been giving all of the children as well.

He looks a little sheepish and shrugs at the comment.]

I didn't think I was, either. Never had a younger sibling or anything. Guess I just happen to have the energy to keep up with them.