I sit back, the feel of his big hands, rough on my skin makes my pussy begin to drip and I feel that horny tingle I get when I need a cock in me. I ru... my hand over his groin, feeling his hard cock pointing upward to his chest. I unzip his fly and unleash his thick cock, around 7 inches at a quick glance, certainly a handful.I lick my hand and begin wanking him feeling him grow a little more in my hand, precum dripping from his glans and making my hand more lubed as I slide up and down his hard. "You're growing up, little sister." Maybe so. I think I'm really learning what's important."Everything was packed away and the five of us pulled out of the campground and onto the road heading for our next stop.We would be spending time with my mother's youngest sibling, Ron and his wife, Gretchen. We stopped at a grocery store and replenished our supplies. We pulled into our campground for the weekend and set our RV at our new site just before lunch. Ron, his wife, and their two teens would. As his mother's glasses got caught between their faces, their mouths devoured each other, their tongue wrestling savagely and mother and son tasted each other's oral fluids. Taking turns they sucked each other's tongues into their mouths and groaned heavily as they licked, sucked and bit each other's lips while their sweaty, hot cock and cunt were respectively fucking and sucking. The abundant juices made Mark's cock squish and they were coating his balls. Mark withdrew his face from his. My tummy clenched and my legs juddered as the glorious sensations wracked through me.My arm ached beyond words but the sensation of her cunt muscles clutching at my fingers as she broke over into a massive orgasm was so worth it. Her juices pooled into the palm of my hand and overflowed onto my thigh as I held my fingers tight into her cunt. Once her breathing had calmed and the strength in her legs had returned, I pulled my fingers from her and brought them to my lips, licking her essence from.