Jeff pulled up the Chronivac on his laptop. He didn't want either his sister or his mother to know what would happen, so he knew he had to make the change quick. He had a brilliant idea, cyber chastity.
In Jeff's newest update to reality, he decided that he would have a remote that controls the sexual urges of both his sister and mother. There would be an organic chip in their brains that would release different chemicals depending on what he chose. As for the remote, there would be a dials that would control their horniness and buttons that would make either one of them do specific degrading actions like making animal sounds or sticking their ass in the air while in public.
But that wouldn't be enough. Jeff wanted his mother and sister to be frustrated. He programmed the remote to also have an option to seal either one of their vaginas completely shut. There would still be a tiny peehole for bodily functions, but no sexual pleasure would be able to be gained from either that, their tits, or their ass.
After quickly finalizing the required fields, Jeff pushed the button that would make the change. Suddenly...