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  1. Stallion Serum: Summer’s Challenge by

    Fandoms: Rick and Morty  

    12 Jun 2025

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    Summary

    In Rick’s chaotic lab, Morty’s desperate bid to impress Jessica with a “stallion serum” backfires, transforming his anatomy into a monstrous, horse-like beast. Summer, caught in the fallout, reluctantly helps him flush the nanobots, but their forbidden chemistry ignites, spiraling into a raw, uncontrollable encounter.

    Language:
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    Chapters:
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