Who is “the Butter Queen” mentioned in the Rolling Stones song “Rip This Joint”?

The Butter Queen, real name Barbara Cope, was an industrious groupie based in Dallas, Texas, linked with countless ’70s rock stars from Joe Cocker to Donovan to Mick Jagger. “I got on with her famously,” Elton John said. David Cassidy has described her showing up at his hotel suite in the early ’70s with two apprentices, ready to orally service his entire band and crew. She called room service and ordered her trademark: a pound of butter. She used the Land O’ Lakes as a lubricant, but of course, once it warmed up, it smelled like hot popcorn–which meant that a blowjob from the Butter Queen had the distinctly unerotic aroma of a movie theater lobby.

(Excerpted from the 2006 book Is Tiny Dancer Really Elton’s Little John?: Music’s Most Enduring Mysteries, Myths, and Rumors Revealed, published by Three Rivers Press, written by Gavin Edwards.)