chapter 5

After dinner, everyone parted for a while and Anna and Martin decided to go for a walk through town. Marte was idly walking around the house. She felt restless, and somehow felt like she needed to know Martin's clothes size. She wasn't sure why, but it was something she needed to know. So eventually she sneaked into the room that Anna and Martin were staying, looked around it, until she saw what she was looking for... but then she head voices at the door. Shit, Anna and Martin were coming back! Quietly she went to the door, hoping to sneak out unnoticed. Fuck, she could hear people right in front of it. Quick, better hide! She hid in the wardrobe, which was unused, hoping that no one would notice her. She could peek through the gap in the door as the two love birds entered. Giggling and laughing. They shut the door behind them, and Marte saw that they had brought back even more food. "How is that even possible?!", she thought, trying to be quiet as a mouse. Anna pushed Martin to the bed. She unbuttoned his shirt. "Come on fatty, that's not fitting anymore. Look how big and round your belly has gotten." My sister is so weird, Marte thought. Not only does she date a fat guy like him, she actively seems to like it, too. She peeked through the door. Martin's belly was facing her on the other side of the room. His fat gut spilled over his lap, big, round and hairy. She could see his deep belly button. Her sister grabbed and jiggled his fat, before getting on top of him and slowly feeding him even more food. Marte thought about how much food he already ate during dinner. But now her sister was stuffing him even more, rubbing his belly. Marte was shocked. But she was even more shocked about her own reaction towards this fat slob getting even fatter. She felt strangely intrigued and noticed a tingle in her tummy.
Meanwhile, her sister continued stuffing her lover. He moaned. She continued feeding him until there was no more food left. Then she patted his belly, undressed both of them. Marte could see her sister's soft silhouette climb on top of the mountain of flesh that was Martin. She pushed his belly forward, and slowly let him enter her.

Over in the wardrobe, Marte tried to stay as quiet as she could, carefully putting her left hand between her legs. She noticed that she was already wet herself. She was aroused an mortified. Was she a fat lover like her sister, too?! There was no time to think about that yet, as she watched the scene unfold. Anna was fucking Martin on top. His fat gut wobbled as she was throbbing back and forth. At some point they paused, Anna climbed down from Martin, both breathing heavily. `He's not, no way!' Martin was getting on top. He lifted his overhanging gut up to enter Anna. he fumbled with her clit, so that his belly pressed against it as he was fucking her. Marte couldn't belidve her eyes. Her chubby sister was dwarfed by this man in comparison. Marte was worried he might squash Anna, but the two appeared to have done this before. Anna groaned under his weight. As the scene unfolded in front of Marte's eyes, she noticed that she too was getting wet. There was something arousing about this fat man having sex with her sister.