Noam Shpancer writes about the masturbation gap between men and women:
In my human sexuality class recently, I asked students to come up with all the known slang terms for male masturbation. They quickly listed at least a dozen. Then I asked them to come up with slang to describe female masturbation. None came instantly to mind. After much effort, they came up with flicking the bean' and Jill off.' That was it.
Language describes reality, and also shapes it. What you don't have words for you do not own or understand. This observation is supported by the data. According to the research, over 95% of males have masturbated to orgasm by age 20, compared to around 60% of women (with some studies suggesting an even larger gap).
(Image from Life Magazine's archive of one man bands)