Ask AI: Write a story about Bart Simpson wearing a diaper and getting treated like a baby by Lisa.

Title: Bart's Baby Day One sunny day in Springfield, something unusual was going on at the Simpson's household, something beyond the usual chaos of their life. Bart Simpson, the 10-year-old troublemaker that everyone in town knew, was wearing a diaper. But this wasn't a prank or a gimmick. Instead, it was the result of a bet he lost against his older sister Lisa. Bart could hardly believe it was happening, yet the soft padding around his waist told him that it was real. The bet: Lisa claimed that she could prove to Skinner that she had discovered a new mathematical sequence, something no one on the planet had ever constructed before. Bart, ever the disbeliever in his sister's intellect, disagreed. If Lisa was right, Bart would have to spend the whole day like a baby, wearing a diaper and being looked after by Lisa. With Skinner himself in awe, Lisa proved her claim, and thus, Baby Bart Day was born. Bart, even if he was in disbelief, was a man of his word. But as the day went on, Bart started realizing how comfortable it was to sit on the floor, propped against the couch as he drew on his coloring books. And having his meals brought to him, didn't sound too bad either. Instead of his usual afternoon of causing havoc throughout the town or arguing with Principal Skinner, Bart was being pampered by Lisa, getting his every whim catered to and avoiding his usual chores and responsibilities. He even got to take an afternoon nap, something he hadn't enjoyed since he was a toddler. Lisa, on the other hand, seemed to be having a great time. It was an opportunity for her to be a mature figure and care for someone. That day, she wasn't just Bart's older sister, but also his nanny. Towards the end of the day, Bart started having second thoughts about his goofy baby-like behavior. "I've had enough Lisa," Bart said in his toddlerish tone as he wobbled towards Lisa, but at that moment, he tripped on a toy car and tumbled down. Lisa quickly ran towards Bart, helping him to his feet. She looked concerned, but also struggled to hold back her laughter seeing Bart in a diaper. "Oh, baby Bart. It's okay," Lisa said, holding back her laughter. "Time to get you changed and ready for bed." As night fell, the baby Bart retires to bed on time for once, Lisa tucking him into his smaller-than-normal crib. But before retiring, Bart says, "Lisa, tomorrow, I'm back to being a regular kid, right?" Lisa giggled, "Sure, Bart. Back to causing trouble." Both shared a hearty laugh, and the unusually refreshing day ended. As strange as it was, they both ended the day with a newfound bond. Bart, wearing a diaper for a day, and Lisa getting a chance to play the mature figure taught them that understanding and humour can bring people closer in the strangest ways. Remember, losing a bet could sometimes lead to a day of unexpected fun and a chance to share a unique bond with your sibling.