"In that case, I should go back to my truck and call to let you know I'm coming." Too late," I said giving him a playful swat and then led him around,...talking about different plants. I was very aware he was checking out my ass more than the foliage. I turned around at one point to look at him and he was intently watching my butt cheeks."Up here, Ty," I said sarcastically. He looked up, slightly surprised then we both laughed."You caught me, Andy. I hope you don't mind me looking." Oh, no,. "You have such a nice washboard stomach. Every boy has genitals, but you have a strong and beautiful body." Thanks. I've worked for it." That's for sure." My sister stood up, put her hands on her hips, and said, "Well. You're nice and clean now. You may go to your room. I need to wash my dress before Mom and Dad come home." As I walked to my bedroom, my sister told me, "You look good from behind, too. You've got a nice, sexy butt."When I returned to my room, I closed the door, and quickly got. His constant rubbing caused a wedgie in my own shorts, and I could feel my panties riding up into my crotch, between my lips. After maybe a minute of heated crotch grinding, he groaned loudly. His hands came up behind my back, pressing our bodies close together. I could feel my breasts mashed flat against his massive chest, even as he gluing our crotches together. The large bulge of his manhood, which I could feel pressed through the thin material of my shorts and his boxer shorts, was wedged. So I pushed my bikini over my hips and only bent over as far as I had to in order to get my suit free enough to let gravity pull them down. I wasn't ready or certain I wanted to show my step-dad my pussy. "Nice ass. Just like your Mom. But as white as that flesh is, you better let me put some sun screen on it or you won't be sitting comfortably anywhere for the next few days." I looked over at him and noticed that his giant member seemed to be awakening and I murmured my thanks as I.