"I know you've always been jealous of my butt sis," the gigantic Nikki said tauntingly to her literally little sister. As terrified as Brie was, she remained silent as Nikki brought her down to just outside her humongous ass. Deep down, she knew she deserved this for her poor treatment of her own sister.
"I mean, who wouldn't be jealous of my nice, juicy, sexy ass?" Nikki grunted mean-spiritedly as she slapped her cheeks right in front of the horrified Brie. The shockwaves of such a gigantic ass clapping acted as a strong gust of wind to the tiny Brie.
"So that's why I'm nice enough to let you off with a front row seat to a live performance of our signature Bella Booty Twirl!" Nikki called out enthusiastically. She brought Brie back up to her face and fixed her with a disdainful scowl. "And even if you don't enjoy it, you deserve to suffer this punishment."
Tears rolled Brie's cheeks as Nikki lowered her back down, snapped open her panties before dropping Brie inside. She hiked them up to make sure Brie was nicely secured.
"Are you ready sis?" Nikki called out, knowing that Brie was in no position to give a clear response.
Nikki then began to play her music in her mind, twirling her titanic booty round and round the same way as she would during her entrance. But unlike with the normal movement, she didn't stop at once. She kept going and going, smushing her cheeks together again and again.
Meanwhile in Nikki's panties, Brie was suffering her own personal hell. As her literally big sister twirled her butt around and around, Brie was sent flying inside the fabric prison of her sister's panties. She smacked into the fleshy globes again and again, never being able to rest before she was bounced. It was like living in a bouncy castle, only the fleshly walls hurt so much more to bounce into. Not to mention that she was sick to her stomach at the forced movement.
Eventually after a few minutes Nikki slowed down and stopped, breathing heavily with a wide smile on her face at the thought of sending her sister repeatedly bouncing against her gigantic butt as justice for her awful behaviour.
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