While we were in NC, Rosebud's favorite thing was to climb up the steps. We would take turns being her "guardian angel," walking along right behind her as she climbed. So, whenever she started heading for the stairs (when we didn't have the baby gate in place), Marathon or I would announce, "Guardian angel!" to let the kids know we needed help watching her. As the week progressed, the kids somehow turned "guardian angel" into "guard a angel." Rosebud had become our little angel who needed guarding.