Becca bit her bottom lip hard to hold in the sound of complaint she almost made. Still gripping her nipple, James's right hand moved to caress the dis...layed nakedness of Becca's torso from the side of her chest, down along the soft curve of her waist until his fingers spread to take a firm hold of the under-slope of her left buttock cheek, revelling in the feeling of the power to subject the nude girl displayed before him to his dominant desires.Becca's eyes closed and she tried to turn her. I was just after the company.So the bell rang for the end of the lesson and I went to collect the keys. Within two minutes we got to the chambers (they were virtually off site – separate quite a way from the rest of school). I opened the door and we went in. I locked the door, but that wasn’t necessarily intentional – I always did that for over-obsessive safety reasons.I started logging onto the computer. It was taking ages to load. Cameron was just looking around. Although I wasn’t necessarily. Her grip was soft and delicate. She tried to pull back my foreskin. It felt equally painful and pleasant. “Just rub it up and down.” I said. For once in her life, my sister was listening to me. She began stroking my dick slowly, following my bulging vein with her index finger. She was clearly a first timer, but she had talent.She grabbed my balls and tried to squish them. “It’s not going to come out faster this way.” As I spoke those words, I noticed there was liquid leaking from her swimsuit. Bundeled into the cab with all of us in the back seat and daddy in-between us we drove back to our flat, I noticed how his free hand was working Pias' crotch, but as he was getting some refund on his nights expenditure, I chose to let him enjoy his moment.When we arrived I suddenly realised I needed him to help get her into the flat, so I asked him to come up and have a coffee and together we got her into the living room and propped her onto the setee.He went into the toilet to relieve himself.