Peter Bayliss credited as playing...
Mr. Dunstable
- Mrs. Dunstable: [Headmaster's office with Dennis' irate parents] Don't push him.
- Mr. Dunstable: I've only got one lung.
- Mrs. Dunstable: His left one.
- Norman Potter: And I've got shrapnel making its way to my heart.
- Mr. Cromwell: Well, I get conjunctivitis.