I was sleeping through most of this, but I imagine it went something like this:
(Scene. 2:50 AM. Mark has gone to Arthur's room to see what it is Arthur wants. Arthur has turned his room's light on.)
Arthur: (Standing in crib): "Up, please."
Mark: (grasping Arthur underneath the arms and lifting him out). "Hey, Buddy; it's time to sleep."
Arthur: "Pizza, please."
Mark (walking into the kitchen): "We already had pizza. I can get you a bottle." (Gives Arthur a bottle.)
Arthur (holding bottle): "Please. Pizza, please. Please!"
Mark (opening empty pizza box): "It's all gone." (Arthur sobs) "John ate some, too." (Arthur flings bottle onto the floor.)
All I can tell you was that later Thursday morning there was Very High Drama when I moved the pizza box to the garage after I prevented Arthur from prying off old dried cheese from the box's inside.