Timid,I slipped my hand around his warm, erect cock. The sensation and rush of emotion that I felt with this contact soon took over my every thought a...d action. I began to stoke his cock with a firm grip as he moved his hand back to pursue the same gratifying movement with mine. I found my self pressing into his chest and kissing his nipples. The taste of his skin and the sensation of his chest hair on my lips brought another wave of heightened excitement. My entire body tingled as John. I unlocked the bathroom door and emerged into the cool hallway. "I can see why mom is still with you after all these year.", I heard from a voice not too far away. I turned to look, and out of shock, forgot to cover up. "Oh shit", I said, as I watched Mariah look at my cock that was still swaying back and forth like a pendulum. I grabbed the towel as quick as I could. "Relax, Dad, it's not like I've never seen a dick before.", as she walked passed me and into her room, leaving her door half-way. Several of the workers were doing their various chores, raking, shoveling or just cleaning up debris. No one paid any attention to her on the bench in the small grotto that blended in with the surroundings. She seemed fascinated with watching Dad load the wheelbarrow carting debris back and forth to the dumpster. The sweat bled thru his t-shirt in growing dark splotches as he worked. He had seen the teenager when she first arrived and thought nothing of it; many people that visited often sat in. Then I started to her house on my bike as I was waiting for a chance like this.I reached her house and knocked the door and she came and opened the door and she was very happy to see me. She offered me a cup of coffee and we started chit chatting about out college and college friends. In the mean time I was eagerly looking at her boobs. They were trying to burst out from the t shirt. Seeing this I had a hard on and my hard on is clearly visible. I caught her glancing at my hard on a few.