“So, Sammi, here’s your chance. You have to ride my cock up and down, and if you can get down far enough that I massage your clit, then you can pr...bably make yourself cum. If I cum before you do, you lose and we stop. Meanwhile, we’ll let Marta cum as often as she likes, because she has more staying power than I do!“Now, get to work, Little Girl. And Marta, you work your cock in and out of her ass while she does it, okay?”Marta swallowed hard, licked her lips, and nodded. Then she started to. I thought that it would be suspicious if I refused, but I also saw it as a chance to touch my Mother, so I took it. I went to the couch and sat on my knees. Her ass was slightly below my eye level, so I was enjoying the view. "O-Okay, Mom; here I go," I said to her, as I slowly I began to apply a small amount of force on her back. I kept rubbing her back with my fingers, slowly applying more force each time. "Ohh! Good, good!" My Mom exclaimed, "You're not half-bad!" At this point, my penis. At least she stopped sucking me for a minute, he thought. Wait, if that isn't her mouth it can only be one thing. He pretended he hadn't noticed and held his breath."Holy shit,” Darlene said, “that's incredible! You're fucking your sister! I've never seen anybody fuck their sister.”I'm inside Becky, again. It felt too good to care about Darlene knowing. Actually, Darlene watching made it better. It was the last possible scenario he could have imagined, but it was still his three favorite. He looked at me skeptically. "Really? You..."I nodded and blushed.He broke out in a grin. "You had me fooled. And after all I've seen around this joint, that's pretty hard to do." He glanced around the bar, then piped up, "Erin!" and waved someone over. A very attractive young woman approached from one of the tables with a broad smile on her face."What can I do for you, Sam?" while at the same time looking me over."Not for me, for this young lady here. She's looking for some advice."She climbed.