Unexpected surprise

 I got bored one evening and decided to hire a *********.  I told her I would pay her $100 and she didn't even have to touch me unless she wanted to but I would need her services for at least an hour I told her all you have to do is flip the switch and no matter what do not flip it off for at least 20 minutes. she no idea what the switch activated I said in after 20 minutes push this button she asked me what if I don't want to turn the switch off I said then don't leave iton. She ask me what if  I want to look to see what's going on.  I told her you can do anything you want after you hit that button if you want to leave feel free to.  I went into my room shut the door and left her on the other side of it. I put the fuck machine in place with a very large dildo  attached to it.  I put plenty of lube on it and attached  a palm sander to my penis. I tied myself to the bed spread eagle l  push the lock closed I realized I forgot the key in the freezer, then I heard her say I'm flipping the switch has the arm pull back on they machine and slowly started to come forward the tip of the biggest dildo I've ever had in my ass slowly start the force it's way in  and I was helpless to stop it as my asshole was being split wide open I was wondering what she was thinking it must have been 20 minutes cuz all the sudden the palm sander kicked on I couldn't  help it I started screaming that got her attention as she opened the door she saw what was going on she started laughing and said oh yeah I'm not going anywhere