While my stomach valves were failed closed, I lost a lot of weight and slept for 20 hours a day. Since I was living up north, it took six months for m... to see a specialist. Years later, when talking with Mom, she confessed to knowing what the problem was. It was a hereditary genetic defect. She claimed she didn’t tell me because she wasn’t satisfied with what the doctors have been telling the family for generations. She wanted the doctor to come up with his own conclusion without any. I tried to move my arms apart but there still must have been a dozen or so loops around them. I needed something to pull the loops out one at a time and my hands were sort of tied up at the moment.Alfie knew what needed to be done and, starting at the wrists, he got the first loop in his mouth and pulled. It took about five minutes for him to get most of the loops undone and I was able to move my arms enough to get the rest loose.There was a combination of pain and relief as I was finally able. To the waterfall, we have to climb a little. I grabbed mom’s body as if I was helping her. We reached the waterfalls. We went inside the cave. It is not very big but enough for four people. I made her lie down and started to fuck her.I raised her legs above my shoulder and fucked her hard for almost ten minutes. Dad called us come-on guys it getting late let’s go. I started to ram her fast, me and mom reached our climax and I started to cum inside her.Mom: We are cumming darling. It’s the best. It felt so good. She started pulling on my cock, slowly jerking it as she bit her lower lip and looked straight into my eyes. Then suddenly she stopped."I should let you shower. Sorry again." she said, then she left the room.I quickly jerked myself off to ease the tension, then had my shower.After that incident, Kara started teasing me about my dick. She'd giggle at me all the time, and when nobody was around she'd taunt me with things like "Josh gets a hard on for his sister." I didn't mind it.