Almost immediately it started. Jen gasped and moaned nearly in the same breath as the heat on her pussy intensified. Her head thrown back she could only guess as to what was happening. The sensation grew and grew, and kept growing bigger and bigger. Was it spreading up her body?
She looked down and nearly screamed as a quickly growing rod of flesh protruded from her groin. It was dark, thick, and veiny, tipped with a wide head. And it was growing before her eyes. Quickly it stretched out to two and a half feet long, five inches across, with the head bigger than than by a good margin. But Jen felt her legs moving apart subconsciously, and that's when she noticed the second change. She screamed at seeing the huge sack, her huge sack! The horse balls sat close to her, the top rubbing against her clit. Underneath it all, her pussy was still there.
After the shock wore off after what felt like an hour, Jen sat there panting, her heafty chest heaving as she stared down at her new member. Touching it once felt storage, and it twitched in response. She could feel the weight of it as it wobbled about.
With the transformation done, she had to see what to do next.