Women use their butts to store/prepare food (no scat)

In a world where high-tech household gadgets have become affordable and high-quality, a strange trend emerged after the invention of the Enema Buddy, a robotic helper which could reliably remove anything unpleasant from a woman's rectum in just 90 seconds, and she'd stay clean all day. Women began using it for sanitary purposes and to prevent embarrassment during anal sex, but soon another application was discovered.

With women's anal cavities now squeaky clean for 8 hours or more, they were a very convenient place to store food. In this fun future, sexual and body stigmas were vanishing fast, so it became accepted and even trendy for a woman to store granola bars, fruit, and anything else that would comfortably fit in her ass, then casually remove it throughout the day as she got hungry.

Women began to swear that food tasted better after it had been in a female ass for a few hours. Soon women even learned that many meals could be prepared in a friend or family member's rectum, and anal cooking became the latest hot culinary trend.