Threesome With Double Penetration And Male-male Action

“Cum in me big brother, I want to feel your hot seed in my pussy”
I just had to obey her and that’s what I did. XXX It was a few weeks ago since I last played a joke on her, so her revenge was due any time now. My sister was fully aware however that the ball was in my court now. As I was contemplating the event, I kept thinking how, at this very moment, my sperm cells were swimming in Marlene’s vagina and womb, looking for her tiny egg that was waiting to be fertilized. Not nearly ready to cum myself, I pulled her on her knees and reinserted myself into her frothy pussy from behind. In my arms was my younger sister, still sleeping. Marlene cooed approvingly at my thrust inside her. It was all really innocent, but as we grew older the jokes became less frequent but more complicated.