She try to make her sister allow she to urinate

Ava tried to calm down, and once her sobs subsided, her bladder full and her wet pussy came back to her. With a piteous moan, she glanced at Jane, who was wearing jeans that nicely rounded the curve of her ass and a red lace bra. She tried to get her attention, waving the chain and moaning as loudly as her gag would allow.

"I'll be with you right away bitch, wait a bit" Jane said without bothering to look at her as she pulled on a tight shirt.

Ava moaned desperately when she saw that she took her cell phone and left the room leaving her alone. He listened as Jane made breakfast, and soon after, she heard her talking on her cell phone.

"Hey, how are you?" she said with a carefree tone. It took a few moments for her to speak again. "Yeah I got the bitch tied up in my room, I bought her a dog bed, you should have seen the look she made when she saw her bed last night" she said with a laugh, talking about something Ava didn't remember. "Of course she wants to piss, she has been trying to get my attention since I woke up, but I want to make her suffer a little."

Ava moaned as she listened to that, squeezing her pussy as tightly as possible. She knew she couldn't unintentionally pee, but still she couldn't help but squeeze her pussy. Her bladder tightened more and more, her fluids falling freely down her thighs. ****, she began to masturbate furiously, perhaps she could still trick her body to be able to piss, she no longer cared about dirtying her bed.

She inserted two fingers of her right hand into her pussy, beginning to move them furiously as her other hand squeezed her clit. Moaning, she fell onto the soft mattress of the dog bed, her face against it as her ass shot up into the air. She closed her eyes tightly as she concentrated on the sensations. She only needed an orgasm to find release.

"Wait, I think the bitch is masturbating" said Jane, walking briskly into the room and laughing at the sight of Ava, who stopped, dead with embarrassment. "Come on bitch, maybe if I give you permission to masturbate you can piss," she said amused.

Despite her embarrassment, Ava continued her furious masturbation. Jane said goodbye to whoever she was talking to and began filming the scene, much to the embarrassment of her little sister. Thanks to how horny she was before she started, her orgasm quickly approached, and with a long moan, it hit her. Her pussy throbbed, her vaginal walls quivering with each wave of pleasure, but her bladder was still full and she couldn't pee.

Ava sobbed as she moved her fingers slowly, trying to pee, but couldn't. When she came down from her orgasm, she heard Jane laugh.

"What a dumb bitch I got. You can't piss unless it's ME who gives you an orgasm."

Ava looked at Jane as she watched the newly recorded video, moaning weakly. Her hands were now squeezing her pussy, not to jerk off, but as a reflex action to hold back her urine, even though she knew it wasn't necessary. She silently begged her sister to let her piss, she couldn't take it anymore.