The term comes from Minnie Rae, also known as Mary Simpson, a preteen harlot or soiled dove of 19th century San Francisco. She was declared "The Little Countess" by Emperor Norton I, who claimed to be "Emperor of the United States and Protector of Mexico." Minna Street in San Francisco was named after her, and "The Autobiography of Minnie Rae" appeared after her death. A photo of the girl, who was declared a Discordian American Princess and a Discordian saint, appears in the book "Victorian Children."
Minnie Rae became pregnant at age 10, and left America with a Mr. Simpson. She took a ship to Great Britain, where she claimed to be a relative of Queen Victoria. There she met fellow preteen James Barrie. They play acted, with Minnie Rae sometimes playing James' mother and sometimes his wife. J. M. Barrie grew up to write "Peter Pan and Wendy," with Wendy modeled after Minnie Rae.
Minnie Rae/Wendy of Neverland also appears with Alice of Wonderland and Dorothy of Oz in "Lost Girls," a porno-graphic novel written by Alan Moore and illustrated by Melinda Gebbie.
She's hiding an Easter egg where? That girl is such a Minnie Rae!