A very impressive erect cock burst free from the restraints of the denim. His cock had been trimmed like a porno cock. Placing my right hand on his im...ressive length I began to stroke his foreskin back and forth. His cock smelt fresh and musky, as it thrust outward from his body. Looking him directly in the eye I smiled and placed the erect phallus between my crimson lips. His head tilted back and a light moan emanated from his mouth. Stepping out of his jeans, he slipped his shoes off and. To my surprise Donna followed me. When I paused in the hallway, she motioned for me to continue.Once in my room, she shut the door, and quietly said, "Mom was asking questions last night about how we're getting along with you and Julia. She was nosey, but I didn't tell her anything about you and Carol. I hardly ever see Julia so I couldn't say much about her. I said that you were the best brother ever and Carol's the best sister." Thanks very much, Donna. That's very good of you. I could get. Do you want me to show you all the things a sister, an older sister, knows and her younger brother wants to know?" She didn't wait for an answer. The way his cock jerked hard in the prison of his trousers told her the complete story. He wanted her to lead him through the lovemaking.He wanted his older sister to fuck him."It's not too difficult. Not too hard making love, that is. Now this should be hard." She unzipped his pants and let his prick snap out like the opening of a switchblade knife.. Gamora...why, she’s perfect as she is, and so much stronger than you. I could not improve perfection.” After speaking, Thanos peels Nebula off his cock and lets her flop and splatter on the stone of the throne room, still leaking cum from between her legs. Her eyes were unfocused with the still ongoing orgasm, her electric cybernetic muscles continuously seizing and shaking. She didn’t notice, or care, when Gamora entered the room and stepped casually over her to slip into Thanos' arms, tilting.