Ever had a newborn kid? Or even been around one? They are the worst. You treasure any moment of peace and serenity available, and if you see a chance to create one, you take it.
If you think this is somehow staged, I can assure you, babies are weird. They'll find the strangest tranquillisers. My daughter, who is just the sweetest, used to do the same thing as this kid, only for this.