Then when you put him in your mouth I wanted to erupt,” he confessed. “I know dear and you did, I heard you,” I chuckled. The rest of the day w...s just a blur. Mark was on my mind all afternoon and into that evening. The following week I arranged a meeting with Mark at his place. Sex with him is unbelievable, maybe because it’s new and exciting, but it’s absolutely amazing. The second time was much better, I was more relaxed and at ease and we were alone. Mark made me feel that way. If I would. “Go on,” Karina said, stepping back with a smug smile. “Fuck your little sister, you gross little boy.”Awkwardly, Mark began pumping forwards, teenage hormones overcoming his disgust as he tried to bury himself in the forbidden snatch. His cuffed hands moved down his sister’s back to the top of her abused bottom.“You deviant little cretin,” Karina snapped from behind him. “Don’t think that I don’t see you trying to grab your sister’s ass!”She snapped her cane up between Mark’s legs, striking. I could see them kissing since the porch light was still on. she quickly unzipped his pants and took his cock out. while they made out, she was jacking him off and as soon as he was hard, she dropped down to her knees and started sucking him off. after a few minutes i heard him mutter something and she got up and led him to our spare bedroom. i quickly snuck down the hall to the room when i heard the door close. i listened outside the door while she gave him some sloppy head then i heard him. Not the thin salty stuff he had been dripping like candle wax for the past few minutes. This was thick, white and almost sweet cum.Due to Baz’s banging I was thrust forward right at the moment of the first spurt into my mouth. This set me gagging a bit and I swallowed some of it but a shitload more leaked out and fell out my mouth. It poured out of me and onto his balls, cock and surrounding pubes.Still Baz kept fucking me hard.I couldn’t speak. My mouth was full of both cock and an enormous.