He slid in hard and without hesitation. I felt like I lost my breath as he fully pressed himself into me. I reached my hands over head to stretch out ...as he aggressively pulled me towards him with each thrust. He worked himself to the point where he was slamming me quick and hard when he suddenly stopped. In one quick movement his jumped onto the bed and flipped me up on my knees. I felt him quickly enter me from behind and above while he pressed his weight into his arms that were situated. He thanked her and left the room.It didn’t happen again. For nearly two years the play between them was less frequent and much more platonic. His parents even remarked to us in a summer visit to our home that they thought their son was “growing out” of the rough play.My wife and I have never had c***dren, so on our nephew’s birthday we always drive to my sister-in-law’s house for his party. He was now s*******n and the party was attended by twenty or so high school k**s and we adults worked our. Everyone had a ball and it worked out very well. Soon the girls realized that this was a dream come true for the boys and became more demanding of them.Keeping the place clean was just one of their many new tasks.They had to speak in a feminine voice when they were there and address each girl as Miss.They were also given magazines to study and were only allowed to talk about girl stuff such as boys and fashion. On of the boys,now known as Cindy,was very feminine right from the beginning.She has. “Makes sense. If I can use your bathroom to clean up a little, maybe I’ll go look in on Natalie and Peter.”I could only shake my head. “Astonishing. You are a sex machine, dude.”“That I am, and it’s obviously time for Robocock to move along. What room did you say they were in?” He stood there stroking his erect and enormous cum-slick cock as he asked, completely at ease in his sexuality.I thought for a moment. “I think it was 312, but we gave them the key to the pool area, so they might still.