It took little work to make Brendan explode for a second time. The boy clenched and grunted as the nearly anthro snake rode on top of him with her tremendously strong body. The pink fluid oozed between their groins like oil, and as Brendan released the snake's eye closed blissfully, feeling weird sensations the transformative juices were now giving her.
"Yesssss!" She hissed, feeling her strange incomplete hands begin to throb, the chest of her torso starting to ache. "Yesssssssssssss!"
Brendan, gasping for air, could only watch as Vipress's anthro form completed. She grew bigger, stronger still, and her hands grew into a complete five fingers each with pointed claws on the tips. She looked down to her chest with excitement and gasped as two mounds began to press forward. Her new hands shot up, clutched her growing tits, while below nubs began to form on either side of her snake tail and legs began to grow out.
Lost in her process, Vipress fell to pleasure as she continued growing while losing the strongest of her snake parts to her transformation. Her tail shrank drastically while her legs grew, her boobs continued to blow up, and the hardness of her scales softened only slightly to soft leather.
Brendan, meanwhile, watched with amazement. At least... until he started to feel cold. At least, until he noticed flecks of scales rising up on his legs. "Uh... m-mistress!" Brendan said in alarm.
"Quiet, sssslave!" Vipress admonished, smiling. "I'm enjoying thissss."
Watching helplessly as vipress transformed to a snake lady, Brendan was devolving fast. His body was being coated in scales, his face was getting longer, and a tail was growing behind him. "Missstressssss!" Brendan screamed, in horror. "Help meeee!"
Vipress opened her eyes in sudden shock and looked down past her huge tits to find her slave snaking out below. "Oh no!" She gasped. "You're..."
Brendan was now convulsing in pain as he shifted and shrank. In no time, the boy's body was slimming, losing definition, and he was turning to a full snake fast.
In horror, Vipress scooped him up quickly in her arms and held him tightly against her chest. "I'm sssssorry!" She whimpered. "I didn't think it would take your humanity..."
Brendan only stared and hissed, eyes wide in serpentine fear, as he shrank and shrank, becoming less human and more snake. Though Vipress was now huge and anthromorphed, Brendan was getting small and fully snake.
When it was all said and done, a long 6 foot male viper coiled himself around Vipress's arms and stared at her pathetically with the best approximation of pure distilled freaked out.
"Ohhh..." Vipress lowered her head guiltily. "My poor, poor sssslave. Do you still undersssstand me?"
The snake hung his head sadly and nodded. Brendan was now a viper just like his mistress had been, though he retained human intelligence despite his quick and painful change.
"Poor boy." Vipress cuddled him closed, placing him around her neck and allowing him to rest on her broad shoulders. "Let'sss ssseee if we can get you help."