When I saw my sister doing it...Wow, that was nothing like I had imagined. The guy was just someone my sister had hooked up with in college. He had a Nordic name, but I can't remember now what it was. It wasn't Thor, but it was something like that. That particular day I got home much earlier than normal, and our parents weren't home yet. Stacy had left her bedroom door partially ajar, and I glanced in and then froze.
I couldn't see the guy's face. He was lying on Stacy's bed, naked, and his d**k was wet with oil or something similar. My sister was completely naked, straddling his thighs, and her hands made wet sounds as she slowly stroked his d**k and talked to him in a low, sultry voice. I stood there and could not tear my eyes away.
Stacy was at a slight angle to me, looking at the guy
