It so happened that once during my exams a very good friend of mine whose name is Sheetal, had requested to study with me turn by turn every day, once...at my house & on the next at her house. I was very good at Economics & she was very good at Accounts. So we decided to help each other. Sheetal was a matured female although very young, say about 20 years, but was ultimate beauty. She had beautiful pair of boobs & fantastic hips. What a beauty!!! Jab vo chalti thi tab uske hips aise hilte the. I ... I certainly would!" She smiled and said "Good. Now ... how 'bout you whip that big, long sex tool out! I'm ready to get started!" Jack had taken the freedom of going commando. As he stood up, his raging prick jutted forward, tenting his shorts. She blinked her eyes a couple of times and sarcastically said "Well ... your "member" photo wasn't doctored! That thing truly IS a monster!" Jack smiled and said "Yes, it is dear ... and it's ready for your experiment!" Roxi pulled the shorts the. I decided that I’ve had my sister a lot and would continue to have her for the rest of the weekend. Therefore, I decided to be a gracious host and tend to Ally’s needs. Ally was on top of my sister, so I picked her up, moved my sister over, and laid down on the couch so Ally could do whatever she had in store for me. Well, this was more in my sister’s comfort zone, so she became somewhat aggressive too. She got up and walked over to me. She lightly traced my cock with her finger, and sat. I looked up in the mirror and my heart dropped in my chest.'That is why Jenny was staring at my cock and licking her lips,' I thought to myself.Here my still seeping cock had caused a big dark cum stain in my shorts right at the end of my cock."Gawd, for sure she knows what she saw," I whispered.I quickly cleaned up the cum then changed shorts and went down stairs. The rest of the day was a busy blur of visiting, helping out in the yard and trying my damndest to avoid being alone with Jenny. It.