Now while I was fucking her from behind she was bearing the pain of my jerks.She said, “Stop it now it’s enough.” I said, “no I won’t stop u...til you tell me the surprise. Why did you call your sister to join us on our trip? Also, let your sister come and see us in this fucking position I don’t mind.”She said, “She will see us in any way. She too needs a fuck as her husband is not able to satisfy her and she knows everything about us.” I stopped and my dick started declining after hearing all. Rob and I moved towards each other. I felt the heat from Rob's body and smelled the aroma of his body....it was sweet and slightly musty... It was intoxicating. Our hands brushed against each and then against each others cocks. I went to the bedroom door and closed it quietly. I heard my parents talking as they ate lunch on the balcony near my bedroom window. Rob and I peeled each others clothes off. We stood looking at each others bodies as our cocks pulsated with blood in rhythm with our. Zip-she was in the room as she heard the familiar noise from the gym. Yes, I decided to do situps, as my dick was actually itchy from having missed her snatch on my thighs. I rolled the mat out, and this time when I laid down, she sat right. on. my. crotch. She had he sweats on, as I did, but I didn't have underwear and I don't believe she did either. After only a couple of situps, I could feel her pussy lips grab my now erect cock and squeeze. And squeeze. And instead of sitting straight up,. My little nips were rock hard. I could help but to moan and then it happened. I cum harder than ever before. This seemed to send Rock into a frenzy when he tasted me. His licking became faster and his long tongue wax striking my ass too. God I was hot! I got some pussy juice on two fingers and rubbed it on my little tits. I encouraged Rock to lick them which wasn't a problem. As he moved his hairy and heavy body on me I felt his dick on my skin. It was long and rock hard! No pun intended. He.