So, a pipe burst at school the one day and they had to send everyone home early because it was flooding, so that day I got home around lunchtime. Dad was still at work, and I couldn't find mom so I checked their bedroom.

Now, usually dad got home before I got home from school, even on an early day. Mom would wake up early with him and, as far as I knew, go back to sleep before I got up for school. I was pretty good about getting up on my own by then and if I missed the bus school wasn't too far to bike to.

But that's beside the point, so I wouldn't see mom on a schoolday until after dad had already gotten back home from work, is the important point.

So I went into their bedroom and I didn't see her, but they had like a long stand at the foot of their bed, a little longer than their king size bed was wide, that I'd always assumed was a coffee table. It had a loose glass tabletop and, under the tabletop they had like a blanket or a tablecloth dr**ed over the rest with enough slack that it bunched up on the carpet. They usually had like a vase of flowers or something on top of it.

Well today when I went in, I heard a sound coming from the "coffee table" like a sort of grinding, whirring noise, like an electric motor.

I picked up the edge of the cloth and lifted it so I could see under it. It was a cage, with a padlock on it, and there was a woman inside. I couldn't tell who by looking, because she was wearing like a full latex bodysuit, but it wasn't difficult to figure out that was mom. Her head was covered in latex too, it made her look bald except for the ponytail coming out the back. She had a leather blindfold on, a ball gag in her mouth, and she was wearing headphones I could hear something playing through.

She was laying on her back with her arms chained to a belt around her waist. Her legs were straight, only slightly apart, and her ankles and neck were locked to the floor of the cage with a built in metal restraint.

The noise I had heard though came from something past her feet. There was a sort of machine at the other end of the cage, bolted to the floor. It was a motor with a wide disc attached, and there was a metal bar attached to it that connected to a pole. As the motor turned the disc the spot where the bar was connected went around and it moved kind of like the way a train's wheels work. It pushed and pulled the pole back and forth as it went around, and at the other end of the pole was a thick red dildo buried in her vagina.

The machine kept spinning and the dildo kept fucking her, and she was completely unaware that I was watching. Dad wouldn't get home for a while, so I got my camera and recorded it, and I sat there next to her and jerked off watching mom get pounded by that dildo. Then I put everything back the way I found it and went to my room.

Dad got back later and kinda tried to figure out if I had seen anything without asking me directly. He asked if I'd seen mom, I told him I figured she went to the store. He asked if I'd been in their room, I said no, the door was locked anyway, right?

The school day after the school was cleaned up, before school, I went to their room. The door was locked this time, but I could hear the sound from inside. They kept locking it for a couple weeks but eventually they must have figured they were safe again.

Just about every school day, mom and dad would wake up together, he would lock her in the cage with the machine running then leave for work. When I woke up, I'd go into their room and watch her while I ate my breakfast, jerk off, then leave for school. And I knew the whole time I was at school that she'd be in that cage getting pounded in total darkness until dad got home, and I would know what she'd been doing that day while we talked about our days after I got home from school.