“In the same way your penis can be flaccid or erect, your partner’s tissues can change depending on how aroused she is, where she is in her hormonal cycle, how relaxed she is, and many other factors. When a woman is fully aroused, she lubricates, her clitoris becomes engorged, the urethral sponge fills with blood, the vaginal opening relaxes, the vagina lengthens and expands in a process called “tenting,” and the uterus balloons upwards towards the abdomen.”  – Excerpt from Beyond Satisfied by Kenneth Play, Chapter 5: Pleasure Mapping, A GPS for Your Partner’s Pleasure, pp. 99-100