After leaving Baxter the dildo, Sherri still felt like she needed to get off. Her libido was beginning to rival Baxter’s. Without noticing it she began fingering herself. “I’ll put an end to this” as she grabbed Baxter the dildo. She placed him on the floor and began riding him. The slow, careful thrusts began driving her and Baxter crazy, so she began thrusting violently. She went harder and harder, not realizing she was shrinking, she almost impaled herself on Baxter as she got smaller. She was on the brink of orgasm but just couldn’t cum. Finally, when when she was about the size of Baxter, she came, hard. As the lust at least temporarily cleared from her mind, she realized that the serum must have been in Baxter, and that she was changing, like him, into rubber. But beyond that she was changing into a