We arrived around 2:00 that afternoon, and went right to work. Mrs. Clark wouldn't be home for a couple of hours, so after we were finished with the w...rk we started doing some laps in the pool. And then just generally horsin around. Mark complimented me on my awesome bod—he said for just 15, I had a great 6 pac, and it was looking like numbers 7 & 8 were about to pop out as well. I actually kinda blushed, cause Mark being a few years older was really looking hot himself. I had a good bit of leg. Turning off the vibrator, he produced a new toy from his never ending arsenal. Lisa tried to watch what he was doing, but was unable to focus, as the dildo in her pussy kept ramming nonstop. He lubed up the slim plug. Reaching under her body, he slipped the thin butt plug up her ass. The flared bottom kept it from disappearing in her ass. Wanting to add to her pleasure pain, he flipped the switch, and the butt plug flared to life. Lisa screamed. She had just came, but the constant stimulation. Like my denim shorts but a bit tighter. I knew I could adjust them to fit the moment, so I slid them on. I stood in the mirror adjusting them for approval. When worn normally they fit tightly, hugging my round ass,... yet covering my cheeks. When given a slight 'yank' they slide right up my ass, and my cheeks are suddenly exposed. I reached for a white top and dressed,... my sandals too. As I exited the bedroom I took a deep breath, and walked back down that hallway. I adjusted myself to. Chris the pushed me back down on the bed and started to fondle a breast as he put the other in his mouth. He sucked on my nipple, flicking his tongue rapidly over it. Gently he started biting on it taking care not to bite too hard. He moved from breast to breast and did this for a few minutes. I felt his hands moving down my body toward my wet engorged pussy. His fingers found my clit as he began to rub it slowly. I arched my back as tried to position myself to give him better access.I open my.