My wife has a technique where she rides a lover’s cock and tightens her vaginal n=muscles on each stroke. She calls it milking the shaft and her lover’s say that it is wonderful. She especially enjoys milking their cum load and her orgasm triggers a bodily response that automatically performs the physical function. I am always concerned that her passion is running so high at that moment when her body responds in this manner that it may induce an unnatural and untimely fertilization. She always claimed that she felt like her body wanted to be seeded and fertilized adulterously when she had sex with a lover. Of course she has no intention of bearing a love chi*ld but it could happen at the most unsuspected time because of her unprotected sexual liaisons and her passion for vaginal insemination.