… The kids we hang out with ask if we'll fill up the bathtub with snow on a winter's day so they can play with snow that's still white, and we look for pigeons and dogs on our "Nature Walks." At music group we sing songs about riding the Subway and taking the elevator to the 17th floor. We are NYC nannies, and that's how we do it. We have the best jobs in the world. We get paid to hang out with the people we love. At the end of the day, though, we're still young ladies (and gentlemen!) tha …