When Julie Andrews sang “Let’s Go Fly a Kite” in Mary Poppins, she wasn’t referring to communication within prison.
Ms. Poppins may have been an unconventional nanny. But her usage of the word “”kite” was firmly within the dictionary definition: “a lightweight framework of wood and paper designed to fly in a steady breeze.”
In prison, the meaning is rather different. In prison, a kite is a formal means of communicating with the institutional authorities. How the word came to be used for this, I do not yet know.
Prison Congregation of America, on whose board I serve, has adopted the kite as one of the key symbols of the organization. When I wear a kite pin, it is to remember those in prison (Hebrews 13:3).