Amazing work.

You pull your cock out of her mouth and stand back to witness the incredible sight. Amazingly, she begins to fuck the monster, sliding her ass up and down the shaft slowly. She manages about a dozen pumps before she can't take it anymore, and falls forward, slipping off the dildo. The sheer weight and size of the shaft bending forward and then snapping back as it comes out of her ass, sends the dildo cartwheeling across the room, flipping end over end until its massive length thuds into the wall and leaves a gigantic cock shaped splatter of lube all over it. Gemma lies panting on the ground, her gaping asshole freely leaking lube all over the plastic sheet on the carpet. You watch, mesmerized, as her sphincter begins to close itself back up until all you can see is her tight little pucker.

There will be plenty more opportunities for her to handle the monster in the future, but for now, you're satisfied that this is one of the toys you can put into regular rotation. After all, variety is the spice of life, and your collection of toys is growing closer to the hundreds and is likely to expand even more. You end up getting rid of the fuck-machine after several weeks - not because it's not doing a good job, but because you quickly decided to upgrade the 'Bitch Blaster' to the 'Double Bitch Blaster'. Now with a brand new machine with two shafts, you can robo-fuck both of her holes simultaneously. The perfect synchronization of the two vibrators precisely alternating back and forth between her ass and her pussy is completely on another level of ecstasy for the girl.