Frustrated by her sister-in-law’s consistent forgetfulness and flimsy excuses during their frequent dining outings, a woman had to repeatedly cover the bills without receiving reimbursement. Determined to address the issue, she hatched a brilliant plan one day, much to her SIL’s growing irritation.

On August 31, 2022, an anonymous female poster sought solace in the vast online community of Reddit’s “AITA” forum. With over 11 million members, this digital sanctuary provides a platform for individuals to lay bare their non-violent disputes and discern whether they stand on an argument’s right or wrong side.

The woman, a 28-year-old Reddit user, often grappled with the recurring issue of her 26-year-old sister-in-law, whom she called “Amy.” Whenever Amy visited from out of town, she chose to stay with the woman’s family rather than book a hotel—a hospitality the woman willingly extended. However, Amy’s penchant for dining at high-end restaurants became a source of contention.

The woman observed that Amy would consistently forget her wallet and conjure up excuses to avoid settling her share of the bill, which had become frustrating. “She always conveniently forgets her wallet, or comes up with some excuses as to why she can’t pay her share,” explained the woman.

What added insult to injury was Amy’s subtle implication that the woman, rather than her husband, should be the one to foot the bill, citing the income disparity between them. While the woman earned a decent income, it was hardly sufficient to sustain the financial burden of treating someone to costly dinners every time they came to town.

Despite previous attempts to collect the owed funds, the woman’s requests for reimbursement from Amy were always brushed aside. One evening, tensions reached a tipping point. Amy had arranged a reservation at a costly restaurant, prompting the woman to assert herself by making it abundantly clear that she would not be shouldering Amy’s bill.

“She had made a reservation at an extremely expensive restaurant last night, and before we left, I made it clear that I wouldn’t be paying her bill,” noted the woman. Inspired by an episode of “Two and a Half Men,” the woman hatched a splendid plan to teach her sister-in-law a lesson.

While they prepared for the restaurant one day, Amy and the woman’s husband ventured toward the car. Seizing the opportunity, the original poster feigned forgetfulness and retreated into the house. There, she stumbled upon Amy’s wallet conspicuously resting atop her suitcase. She discreetly stashed it in her purse and rejoined them for dinner without hesitation.