The episode "P.S. I Hate You" begins with Marge revealing a long-held personal habit: whenever she gets angry at someone, she writes a letter expressing her feelings and then locks it away in a box that she never intends to show anyone. This box of angry letters has been accumulating for decades, starting from her teenage years through to her adult life as a mother. The scene shows Marge writing one such letter, highlighting her internal struggle with unexpressed anger.

The story progresses to Marge's birthday party, where many Springfield residents gather to celebrate her. During the party, the box containing all her secret letters mysteriously goes missing. Marge soon receives a blackmail threat from an unknown person who has the box and threatens to release the letters publicly, which would shatter her "nice-lady" reputation in Springfield.

Marge, distressed by the threat, decides to investigate who could have taken the box. She enlists the help of her family, including Lisa and Bart, to identify suspects among the party guests. Lisa and Bart attempt to accuse various attendees, but their efforts are clumsy and lead to dead ends, causing frustration.

Meanwhile, Marge confronts several people she suspects might have taken the box. She even approaches her sisters-in-law, Patty and Selma, hoping to borrow money to pay off the blackmailer, but they refuse to help her, adding to her stress.

As the investigation continues, Marge recalls her teenage years and the origins of her letter-writing habit, including a montage showing her different hairstyles and emotional states while writing the letters. This flashback deepens the understanding of her character's long-suppressed anger.

The tension escalates when Marge receives another message from the blackmailer, increasing the pressure to recover the box before the letters are exposed. Marge's anxiety grows as she fears the damage the letters could cause to her relationships and social standing.

In a twist, Marge discovers that the blackmailer is not who she initially suspected. The episode includes a chase sequence where Marge pursues the culprit, which involves a series of physical and verbal confrontations. The chase is detailed, showing Marge's determination and resourcefulness as she navigates through Springfield to retrieve the box.

During the pursuit, Marge also has a romantic subplot involving Jimbo Jones and Shauna Chalmers, which adds complexity to the narrative. Their interactions provide moments of levity and character development amid the main plot's tension.

Eventually, Marge confronts the blackmailer directly. The confrontation reveals the blackmailer's motives and identity, resolving the mystery. Marge manages to reclaim the box, preventing the letters from being made public.

The episode concludes with Marge reflecting on her anger and the importance of expressing emotions in healthier ways. The final scenes show her reconciling with those she had written letters about, restoring her relationships and her reputation in Springfield.

Throughout the episode, guest stars Beverly D'Angelo as Lurleen Lumpkin, Jon Lovitz as Artie Ziff, and Tim Meadows as himself appear, contributing to various scenes that enrich the story and provide additional context to Marge's social circle and the community's dynamics.

At the end of The Simpsons Season 36, Episode 14, "P.S. I Hate You," Marge's secret box of angry letters is stolen and the letters are scattered across Springfield, revealing her hidden frustrations to the townspeople. Instead of being rejected, Marge is embraced for her honesty and complexity, earning the new title "The Most Three-Dimensional Woman in Springfield." The episode closes with the townspeople writing their own angry letters, finding relief in expressing their true feelings.

The episode concludes with a tense and revealing sequence. After Marge's secret box of hate letters is stolen during her birthday party, she frantically tries to recover them to protect her reputation as Springfield's "Nicest Woman." The thief, Shauna Chowmer, takes the letters, and Marge, along with her family, attempts to break into Superintendent Chowmer's house to retrieve them but fails. The chase leads Marge to a dam where, during the pursuit, the letters fall out and scatter in the wind, making Marge's private thoughts public to everyone in Springfield.

Faced with the exposure of her hidden anger, Marge decides to confront the town openly. She apologizes--not for having negative feelings, but for hiding them--and explains that she prefers people to know the real her, with all her complexities, rather than just the overly nice persona she maintained. Surprisingly, the townspeople respond with support and acceptance, dubbing her "The Most Three-Dimensional Woman in Springfield." Even Helen Lovejoy, who had read one of Marge's harsh letters aloud, tries to apologize, though she maintains her usual superior attitude. This time, Marge does not hold back and tells Helen exactly what she thinks.

The episode ends with a scene of Springfield residents writing their own angry letters, discovering that expressing their true feelings feels liberating. Marge's fate is one of acceptance and authenticity; she no longer needs to hide her anger to be liked. The other main characters, including Homer and the townspeople, remain supportive, showing a community willing to embrace honesty and complexity in relationships. This ending highlights the theme that it is healthy to acknowledge and express negative emotions rather than suppress them.

The Simpsons Season 36, Episode 14 titled "P.S. I Hate You" (2025) does not have any publicly documented post-credit scene. Available detailed episode summaries and reviews focus on the main plot involving Marge being blackmailed over hateful letters she wrote, but no mention is made of a post-credit scene or extra content after the episode's credits.

The episode centers on Marge's struggle with her reputation as the town's nice lady being threatened by a blackmailer who wants to expose her angry side. Guest stars include Beverly D'Angelo, Jon Lovitz, and Tim Meadows. The episode aired on April 13, 2025, and received positive reviews.

While The Simpsons has occasionally included post-credit or end-credit gags in other episodes or special finales (such as the Season 36 premiere's meta finale parody with extended credit sequences referencing iconic TV finales), no such scene is noted for this particular episode "P.S. I Hate You".

Therefore, based on the available information, there is no post-credit scene in The Simpsons Season 36 Episode 14 "P.S. I Hate You."

Shauna, a character who discovers Marge's stash of hateful letters while browsing her closet, steals the box and conspires with Jimbo to blackmail Marge using the letters.

Marge plans to break into Shauna's home to retrieve the letters but improvises by conducting an interview for the PTA newsletter when Principal Chalmers is present. Meanwhile, Homer breaks in to get the box, leading to a rooftop chase where Marge saves Shauna from falling but loses the letters.

When the letters fall and are distributed among the townspeople during a parade, Marge publicly apologizes for hiding her true feelings and reveals her multifaceted personality, showing that her anger and complexity are part of who she is.

The episode reveals that Marge has spent decades writing angry letters to people she is upset with but never sends them, highlighting a hidden side of her personality that contrasts with her public image as Springfield's nicest woman.

Helen mistakenly believes she wrote one of the letters, causing chaos, and remains snarky despite reading the letters. Tim Meadows appears as a character who participates in the parade and later writes angry letters himself, adding to the episode's exploration of hidden resentments in Springfield.

The Simpsons Season 36, Episode 14, titled "P.S. I Hate You," is rated TV-PG, indicating it is generally suitable for a family audience but may contain some material parents might consider inappropriate for younger children. The episode involves Marge being blackmailed over hateful letters she wrote about townsfolk, which introduces themes of anger and deception.

Potentially objectionable or upsetting aspects for children or sensitive viewers include:

• Sassy crass language: The dialogue contains a bit more sharp or edgy language than usual for the series, which might be surprising for very young or sensitive viewers.
• Themes of blackmail and exposure: The plot centers on Marge's private angry letters being stolen and used to threaten her, which involves emotional tension and mild suspense.
• Emotional intensity: Marge's internal struggle with her repressed anger and the threat to her reputation may involve some dramatic or tense moments.
• Chase scenes and mild suspense: There is a chase sequence and some suspenseful elements that could be slightly intense for very young children.

No explicit violence, strong language, or adult content is noted in reviews or summaries, and the episode maintains the typical animated sitcom tone with humor and character-driven storytelling. Overall, it is family-friendly but may be best suited for older children and up due to the emotional themes and slightly sharper language.