After all, language itself is abstract by its very nature, and has been utilised for ages and ages to create cryptic, abstract, or warped messages or thoughts. But as a cryptic statement that lacks clear meaning, it's pretty good. 'masturbation' would be a possible.
'beating my vagina' is, as you say, a very strange collocation. Developmental biology of helicoforamina reveals holozoan affinity, cryptic diversity, and adaptation to heterogeneous environments in the early ediacaran weng’an biota (doushantuo. 岛海桐叶子是可以吃的,含笑林仙是辣的 小岛海桐alseuosmia pusilla 含笑林仙pseudowintera colorata 保护色(cryptic mimicry) 生物通过拟态周围的环境被称作保护色,一般都是为了防.
For the same reason, negative is used. Affirmative is used in radio communications because of the ease with which a cryptic yes can be dropped or misunderstood.