Some hours later, Kelly woke up, climbed off Jake, and hopped to the floor. She looked over her body. She was a frog girl, just like her first transformation, except for her big green dick. She still had her leggings mostly on, and pulled them the rest of the way back up to make walking easier. She still moved a bit awkwardly, not used to webbed feet.
Kelly went to her closet, intending to take the leggings off and put them in her laundry basket. Before she did, she spotted the instructions that came with the leggings. She had only glanced at the original instructions for the first leggings and never read the second. After the mix-up in who wore which leggings she thought it might be important to read the warnings.
"Leggings should not be worn more than 24 hours, otherwise changes become permanent."
No problem.
"If leggings are worn to transform into your opposite biological sex, changes become permanent after 12 hours."
How long had she and Jake been asleep?
"Sexual climax further reduces the amount of time before changes become permanent, by about one hour per climax."
Uh oh.
"Leggings must be completely removed to begin reverting to human form."
Unlike their first time with the leggings, this time neither Kelly and Jake had taken their leggings off, only pulling them down enough to fuck.
Kelly hurried back to the living where Jake was still laying on the couch, but awake now. Jake eyes were closed and he was fondling his green breasts with his webbed hands. Jake was so hot as a frog girl. Kelly felt her penis get hard. Jake opened his eyes and saw Kelly standing there.
"I know that look" said Jake. "You like what you see." Jake sat up on the couch. "So do I."
Kelly say on the couch next to Jake. "We need to take off our leggings off soon. If we don't..."
"We'll be stuck like this?" asked Jake. Kelly noticed the hopeful tone of his voice.
Kelly nodded. Her dick twitched.
Jake suddenly swung a leg over Kelly's lap, straddling her. Then Jake started grinding on Kelly, feeling her erection.
"What if I told you that when you came inside of me it was the best feeling of my life? What if I want to remain your frog mate forever?"
"We can do this anytime we want" said Kelly. "Just put on the leggings again later and we can fool around as frogs. But for now we should take them off and go back to being human."
"If you were really in such a hurry to go back to being human why didn't you take your leggings off right away? Why come back to to the living room first? Why aren't you trying to take them off now?"
Jake caressed Kelly's breasts. "I think it's because deep down inside you want to keep this form too. The best of both worlds." Jake ground his crotch against Kelly's to accentuate the point, still fondling Kelly's breasts.
Kelly opened her mouth to deny it. To say she wanted to go back to being a human female and Jake to being a human male. She couldn't find the words before Jake kissed her, their long frog tongues entwined. Kelly's mind had doubts, but her body was certain.
When Jake broke off the kiss, Kelly was momentarily speechless. Finally she half-heartedly sputtered "We've got no more than twelve hours from when we put on the leggings. An hour less for each time we climax."
"Then it's probably too late for me anyway," Jake said with a mischievous smile. "You gave me several orgasms, and I gave myself a few more."
Jake hopped off Kelly's lap onto the floor in front of her and spread her legs. "Let's make a deal. I'm going to give you some frog-tastic head until you either tell me to stop and you take off the leggings, or you orgasm yourself into being like this forever."
Kelly tried to figure out if Jake was right, if he was already permanently a frog girl. If so, Kelly wouldn't hesitate to share Jake's froggy fate. But did Kelly want to do so with a penis or a vagina? Take off the leggings and go back to normal, then put on the other leggings to become a frog girl instead? Jake's slid down the leggings just enough that Jake's tongue could begin sliding up and down Kelly's penis. The pleasure was too much and Kelly could not longer resist. She began to fondle her breasts as Jake continued to provide oral delights. As her climax neared, Kelly began to feel strange but pleasant tingle all over her body. She instinctively knew she was nearing the moment when change would become permanent.
Jake broke off the blow job, tugged down his leggings just enough, and climbed back onto Kelly's lap.
"Do you feel it too?" Jake asked. He had knowingly exaggerated earlier, so eager was he to permanently become a frog girl.
Kelly nodded. "Frogs forever, my love."
"I guess you can start calling me Jane instead of Jake."
Jane impaled herself on Kelly's penis as deeply as she could go. So preoccupied with her own decision, Kelly hadn't realized Jane was practically dripping wet from her eagerness. Kelly let out a cry of pleasure as she immediately climaxed. Her leggings ripped as her muscular frog legs grew a size larger. Jane rode Kelly for a moment, feeling her mate filling her with seed. Jane let out a cry of pleasure as she began to orgasm, her legs expanding and shredding leggings like Kelly.
Jane rode Kelly until her body stopped shaking and Kelly went limp. The two lovers slumped against each other, temporarily exhausted from the sex and the further transformation.