Which is, we suppose, not that far from being Like A Virgin. The Mary Poppins observation is according to a supposed link from Malawian social service's investigation into the adoption of David Banda.
We know, we know: Mary Poppins was a nanny and not a mother, and she wouldn't have hired in another nanny to actually look after the kid. Although she did have a relationship with a bloke who spoke in a fake cockney accent. The Sun reports:
Yes - that's exactly what Mary Poppins used to do to mark a job well done. It's a strap on, by the way, Guy. You're going to have your chim-chimeny place seen to.