Uncle Charles eyed me with open lust as my little sister grew jealous as hell over it. She had also fucked Charles and wanted to spend the night with ...im. Too bad little sister, it was either make it a threesome or go to your room. Well that might be a moot point since I would be staying in her room. She huffed and made a real pain in the ass of herself until game time began. We have an open family, secrets not allowed, except from Mom that is. She seemed to never have a clue that every one of. How badly could I have screwed that up???SIN's libido has been an unfolding (as in wet, slippery pussy lips unfolding) adventure since our first assignation. That night she was extraordinarily HORNY and was spending the evening with what she felt was a "nice guy". She had no real trouble with a one-night screw that time as long as it was a good FRIENDLY one! NO CONDOMS please, she was 'on the pill' and wanted THE REAL McCoy IN her!She had elected me to "cure" her problem, if I could! At the. She was breathing hard and for the first time, even though I didn't realize it, she was full of lust. Susan forcefully took my hand and brought it down to her pussy. She made my touch her and rubbed it against her. I do remember how wet and warm it was. Without much warning she kind of sucked on me I guess until I was hard enough and climbed over me. She was much larger than me, so, I just stayed stiff like a statue as she lowered herself onto me. I didn't know what the fuck she was doing, but,. She felt Stan groan as his own pleasure claimed him and he attempted to fill her with his cum.Finally he slumped over her, breathing hard. Her legs were rubbery and she had to fight to stay standing. Stan moved back, his cock sliding reluctantly from her."God, I always feel so empty afterwards," Sammi murmured."What was that?" he replied, his voice thick."Um, nothing. Too bad we can't do that again."Stan helped her upright, smoothing her skirt back down. He peeled the condom from his shrinking.