The phrase "Palmela Handerson", is a joking term used to make reference to masturbation. The term synergizes masturbation with actress Pamela Anderson, famous from the 90s T.V. show "Baywatch", and former girlfriend of drummer Tommy Lee, from Mötley Crüe.
"My buddy has no real girlfriend to have sex with, but he does have "Palmela Handerson" to get himself off."
In the spirit of Rosey Palmer but with celebrity appeal. Sounds like Pamala Anderson. Name you would give while providing a girlfriends name when no girlfriend exists. also a reference to masturbation