It first appeared in the third episode of Monty Python's Flying Circus, "How to Recognise Different Types of Trees From Quite a Long Way Away", on BBC1 on 19 October 1969. The sketch also appeared in the first Python film, And Now For Something Completely Different, in which it segues into the "The Funniest Joke in the World" sketch.
The sketch starts with a milkman (Michael Palin) delivering milk to a suburban house. The door opens and a seductive woman (Thelma Taylor in the television version, Carol Cleveland in the film version) steps out and lures the milkman in; the milkman looks around, then enters the house. The woman takes the milkman upstairs, smiling at him and beckoning him with her finger. The milkman cautiously follows her as she unlocks her bedroom door. She opens the door and ushers the milkman inside. As the milkman enters the room, she shuts the door and locks it. The milkman looks around the room and sees several milkmen, some of whom are very old, including one who is a skeleton.
- Larsen, Darl; Williams, William Proctor (2003). Monty Python, Shakespeare, and English Renaissance drama. Jefferson, North Carolina: McFarland. p. 204. ISBN 978-0-7864-1504-5.
- Dunne, Susan (9 September 1999). "Classic and not-so-classic Python". Hartford Courant. Hartford, Connecticut: Tribune Publishing.
- Green, Joey (2002). Joey Green's amazing kitchen cures. Rodale. p. 22. ISBN 978-1-57954-643-4.