Elvis’ obsession with talking in a baby voice using nonsense words is well-documented.
The star was extremely close to his mother from birth all the way to her sudden death in 1958, just before he left for Germany.
Ever since Elvis’ twin brother Aaron had died at birth, Gladys was extraordinarily overprotective and somewhat infantilised her surviving son, who often shared her bed until his early teens.
They spoke in their own made-up language and Elvis carried this into his adult life and many of his relationships.
And it was natural all these patterns of behaviour would continue with Priscilla, now that Gladys was no longer around and the star needed looking after.
Priscilla says: “I was always ready to greet him at the door and pamper him,” says Priscilla. “I loved taking care of Elvis very much. I loved tending to him. I loved feeding him… It was different, but it was ours.”