Friendly ghosts

At five in the morning, every single day, the little one starts the day not crying for milk or for a diaper change, but by talking, giggling, squealing in delight. The only trouble is, he is alone in his crib, looking at a corner of the wall and finding it hilarious. The first time I saw this in the video monitor, it spooked me out and I dreaded going there to check on him and running into poltergeist. Nowadays I am so exhausted that when baby was blabbing away this morning and husband asked whether we should go check on him, I mumbled that as long as he is entertained, I don't care which dimension his buddy comes from.