Nicole Kidman gave a shoutout to the steamy milk scene in her erotic film “Babygirl” while accepting the best actress award at the National Board of Review’s awards gala in Midtown on Jan. 7. At the end of her speech, Kidman, 57, told the crowd, “I’m going to raise a glass of milk to all of the baby girls in the room,” lifted the drink above her head and chugged it.