These are pretty funny.
I call my kids "cost center #1" and "cost center #2."
I call the nanny "the boss," as in, if a kid asks me if s/he can do something while the nanny is on the clock, I just say, I don't know, "ask the boss." On the weekends, I'm "the boss." I enjoy wielding my immense powers, bwahaha.
I offer "disaster preparedness professional" as an alternative career title for a nanny. Seriously, though, I do think nannies have very transferable skills in that they are always looking/thinking/planning ahead, and in particular they're visualizing what could go wrong and how to nudge the charges toward behaviors that set them up for success. There is a lot of strategy, logistics, and human psychology (adults aren't that different, honestly), involved.
-MB