Scene: Breakfast in the Kitchen. Arthur is in his highchair and Mark and John are going through breakfast rituals.
John (turning away from emptying the Ceylon tea leaves into the compost): "Sorry honey, you're doomed."
Mark (filling a dirty oatmeal pot with water to soak): "What do you mean?"
John: (singing a Renaissance madrigal): "Jog on, jog on, the footpath way..."
Arthur: (waving a spoon in the air): "Jog on, jog on, merrily hent style-a"
John: "He listened in during a Pearwood rehersal." (The implication being that Arthur will become a child star on the Rennaissance Faire circuit and that Mark will have to dress in funny clothes and say phrases like 'I prithee, sweet maid...'.)
Mark (nonplussed): "Hey, Arthur. (Imitates Led Zeppelin) 'Been a long time since I rock and rolled. Been a long time since I rock and rolled. Been a long time, been a long time, been a long time since I -- '" (points to Arthur)
Arthur (still waving spoon): "'Rock and rolled.'"
Mark: (turning back to John): "He's at an impressionable age."