My middle finger easily slipped along the center crease, spreading her open. I slid it up and bumped gently across the hard little nub at the top, her...hand tightened on my forearm, the nails digging slightly as she raised her hips seeking to press harder. I wasn’t having it and deftly moved up and away before circling back and slipping once again inside. I was amazed at her wetness. It seemed she could coat my fingers faster than I could work the wetness around tender mound. I worked a finger. “Ooohh…yummy.” She lunged at my sister, then remembered that I was supposed to be in charge of this whole thing. She turned to me and looked at me with innocent puppy dog eyes. Her words contrasted her look entirely. “Can I pwease wick all of your cum off of her sexy body? Pwease?” I had to laugh. “Go for it, but if you make her cum, there will be hell to pay.” With a sarcastic salute, she started by slowly kissing my sister, their tongues dueling together. She broke the kiss and trailed her. Sandra and Kirstin each had a room downstairs, and Courtney had a small bed in her mother's room. Eric and Sean were in the third downstairs bedroom, which had two sets of bunks set up. Eric was not thrilled, but took it well. Jessica had the room that had been Morgan's, and the other upstairs room was held open for Megan's parents.While standing by the hot tub room, Morgan devised a little signal system on the fly. She mentioned that often, people preferred to use the tub naked. When there was. "Hey ... no worries ... I'll close the ensuite door and you can work in the walk-in robe" she explained in a happy voice.She showed me to the bedroom and to the walk-in robe then she headed into the ensuite. When the door closed, I quickly hid the canister in the bedroom and activated it. Within about two minutes the spray would have been deployed, and the fun may then begin.I checked the control unit whilst I waited and discovered that it needed a reset. I performed the reset and the system.