We often masturbated together on line. She gave me her phone number so that we could masturbate while talking on the phone. On one occasion she said "...isten to this..." and I heard wet sounds, "squish, squish..." She said a bit breathlessly, "what you hear is my fingers in my pussy as I held the phone down near my cunt. Now listen to this..I'm cumming...Ohhhhhhh, Ahhhhhh...Ohhhhh soooo gooood!" At which point a wonderful orgasm overtook me as I shot a very big load of cum. Such was my. I then put my hand onto her neck and slowly moved it down towards her top, then reaching her right breast I hooked my thump around the top slowly exposing her breast until her nipple was out. As this point she grasped throwing her head back on to the headrest looking towards the back window. The driver looked in the mirror seeing me pulling down the rest of her top and as I made no effort to cover her up the driver adjusted the mirror a better view.I then started to lick and suck her erected. What would I do if my sister wanted to touch it? What if I came? All over her hand?"Oh..." she sighed. And suddenly I saw light in her eyes. "Can I?!" Sure," I said feeling myself turning red."Good. I'll do that... Sometime," now she smiled at my obvious embarrassment.I sighed a sigh of relief and disappointment. It was obvious that she wouldn't want look at it tonight. I had hoped that I maybe could get another look at her cunt and maybe an even more closer feel of it if she had prompted on. Theroom even had its own balcony! I opened the closet door, turned on thelight and saw that I would be able to hang a lot of outfits in there. Oneend of the closet was a floor length mirror and there was built indressers in the closet as well. I noticed that there were a few thingshanging already in the closet and upon closer inspection realized theywere dresses and nightgowns! I opened the drawers to find a few pairs ofpanties, some bras and stockings as well. I guess Rikki had already.