After about 10 minutes of her teasing me I decided that I would go to the toilet for a piss to calm down a bit as I walked in Lisa rushed in at my bac... hitched up her shirt pulling down her panties giving me a nice look at her unsaved pussy and proceeded to piss right there in front on me . I could no hid my massive bonner any longer in was practically bursting out my pants she was just sat there with her panties round her ankles and she started to tell me that some of her underwear had gone. I picked up the shovel, toilet paper and soap and mentioned I was going to “take care of business”. I saw “M” and “L” look at each other and smile. I took the path I had cleared the day earlier. I listened for sounds that I was being followed. I wasn’t sure, but I thought I heard them. When I arrived at the tree with the V I removed my cut-offs and stood in a sunny spot stark naked. Just the thought of the girls hiding near by and watching me caused an instant hard on. I waded into the stream. "That's another invention my brother came up with. He calls it the Body Augmenter Rendering Bimbos Intensely Erotic." Huh?" asked Cindi."You can just call it the BARBIE machine."She giggled at that."Now take the rest of your clothes off and climb in," he instructed."In there?" she exclaimed."Yes. We have to fix your body so you can be a real bimbo. This machine will do that." Will it give me big boobies?" she asked. Dr. Lowe had a tiny rack."Yes, it will. Now loose the undies, up the ladder,. I just told him I would never do that for him, for sure…But then Daniel started it; as a game, a challenge.A short time later, I was wondering how I ended there; on all fours, my sexy black dress bushed at my waist; collared in leather, leashed and butt plugged; with a hard crop swatting my stinging ass… It had been for curiosity, for lust, for my desire for submission… I was very excited…Daniel said I should feel it; while he was putting the collar around my neck.And the bastard was right: I.