Their daughter needs some shine

As Jack and Katie walked up to their daughter's room, they could hear Sarah's study music lightly through the door. They reached for the handle and entered, giving Sarah a second to lazily look up from her biology book as she lay on her bed, to see her parents towering over her. She stared in horror, seeing they were naked and covered completely in a strange silver paint? But what was truly scary was their sexual organs were now giant, swollen, and oozing this silver out of every hole! Mom and Dad quickly ran over, with Katie pushing her down on the bed and forcing her mouth open, then spewing some of the delicious parasitic silver into her daughter's agaped mouth.

Sarah was about to spit it out, but, well it tasted amazing! She had the instinct to gulp it down, feeling a sense of warmth pass over her body, fogging her mind. She needed more silver as Sarah eyed her mother's large throbbing nipples, instantly latching on and sucking hard, drinking down gulp after gulp of shiny milk, feeling her insides and body change. Jack could see his daughter's body needed further transformation, as he felt silver parasitic cum churn in his balls, shooting silver cum all over her as she began to feel the changes, her flat chest rapidly inflating as her tits filled with new silver milk and began to stretch her flimsy t-shirt, her pussy swelling with silver.

Jack tore Sarah's lower clothes off of her, grabbing her now wide hips and easily sliding his impossibly long corrupted cock inside her, as she screamed in eccstacy against her mother's swollen tit at this new found pleasure, load after load of pure argent blissful cum pumping into her, dribbling out of her perfect slit of a pussy, all over the bed.

After sucking and fucking silver for what seemed like hours, painting the bedroom shiny, they realised that the silver needed spreading further...