Guinevere was the legendary queen consort of King Arthur. In tales and folklore, she was said to have had a love affair with Arthur's chief knight Sir Lancelot. This story first appears in Chrétien de Troyes' Lancelot, the Knight of the Cart, and reappears as a common motif in numerous cyclical Arthurian literature, starting with the Lancelot-Grail Cycle of the early 13th century and carrying through the Post-Vulgate Cycle and Thomas Malory's Le Morte d'Arthur. Guinevere's and Lancelot's alleged betrayal of Arthur was often considered as having led to the downfall of the kingdom.
In "Jungle Love", she is the consort of King Arthur Griffin, explaining that if he removes the sword from the stone, he gets to have sex with her. Griffin then asks how sexually she'll behave if he gives little effort in removing the sword.