He tried his best to only imagine an anonymous woman in his mind with soft, pale skin and tender lips beneath his as he mentally added freckles and green eyes to her, and he shrugged Lily's characteristics out of his head as he thought of the exact opposite, something drab and colorless as he wiped away the freckles and made the eyes and hair a plain brown as he stroked himself a bit faster. He imagined the girl's lips encircling the tip of his erection and made eye contact with her, eyes appearing hungry as the brown hair turned a violent pink as she satisfied herself with him. Not her either! Severus thought furiously, I don't need either of them ruining this for me. Of course, his mind was more than willing to pull himself out of that fantasy as it morphed into Lily and Nymphadora being together.