I always say that the little monster calls me Umna. That's the sound he makes when he desperately wants me or something from me. He'll make it when trying to hurl himself out of Mr. Wolfman's arms and into mine, or if he wants food and I'm not getting the boob out fast enough.
Yesterday, Mr. Wolfman came into the room carrying the monster and said to him, "[Monster], who is it?" pointing at me. To which the little monster said, "Umna".
We both know it was (probably) a fluke, but we both heard it, clear as day, and it was amazing.