(If you do not like fart fetishes, Undertale, or the two mixed together, please leave now! This was requested by :iconAlarmingAnimations:, I hope he enjoys! Also, this story takes place chronologically just after the Frisk's Birthday Brawlers story, so read that if you need any understanding! otherwise, enjoy!)
Despite the embarrassing situation that MK and Azzy were found in when Frisk and Toriel got back from the store, the party that came afterward was still a blast, with those two pining boys and everyone else having fun enjoying snacks, drinking soda, and playing party games that brought everyone together- quite literally when it came to the ones like Twister. By the end of the party, everyone was tired and ready to go home, except for the people who already lived there like Frisk, Toriel and the Skelebros.
However, before Asriel and Monster Kid could go, Frisk gave a sweet deal to them: "Toriel says that the two of you can have a sleepover with me! You have a choice of either sle