I watch it go in and out of my sister's pussy as her orgasm built and her face screwed up and she got nearer and nearer the edge of no return. Mom was...still watching me stroking my cock fast and hard and stealing a look at her I remembered her words "Don't you dare cum" so I slowed down to a nice gently stroking again."Get up on the bed in front of your sister Tommy NOW!" Mom commanded me and I did as she said.As I sat knee to knee with my sister mom pulled her back onto herself as she fucked. Her proficiency with ropes was superior, and she harbored a disdain for zip ties and handcuffs. By the time Zeek regained his full consciousness, Elena had placed him on the bed, with another rope looped around his neck and connected to his wrists, the wrists were then connected to the ankles. Zeek was in a rigid hog tie and any struggling would result in strangulation.Elena then delivered her ultimatum, demanding all of Zeek’s money and marijuana, predictably he claimed to have only fifty. “No, Natalee, I'm sorry, I haven't seen your kitty, I'm sure she's okay. Cats don't get lost much, they come home when they're good and ready. Just give her some time. If you don't find her by noon, I'll help you go look, but you shouldn't be overly worried, Okay?” With that reassurance Natalee went off to bang on the next neighbor's door. I closed ours and went back to mom's bedroom, but she had gotten up and put her gown on. She smiled and said, “Well, it seems that both you and Natalee. It was hard to get any speed with the water in the way, but we'd had practice and knew how to move with its flow and barely any water spilled out. Not long after, I could feel my climax arriving. "Sierra..." I panted as a way of warning. Sierra, picking up on my urgency, added an interesting circular sway to the rhythm of her bouncing hips, and I couldn't contain myself. Sierra somehow knew just the right second to hop off of me, and she leaned back as she did so, letting my sperm shoot all.