If his frequent use of the word "mom" is anything go off of, that's exactly what he does, because that's such a kid thing to do: coming running to the front door when their mother gets home thinking she has McDonald's or Pizza Hut.
Never forget the myriad of ways in which Phil is still a child. Dude can't even enjoy Christmas because he's a forty year-old man now and so there isn't anyone leaving all kinds of shiny presents under a tree for him to tear the wrapping off of, nor would he be able to enjoy watching his own kids do that if he had any. He's like the Grinch, except with a different ending no one is going to enjoy watching.