she was mindlessly engulfed by spasm after spasm

Rikku moaned and bucked, trying to go over the edge. Squeezing her breasts hard, pumping wildly down onto the vibrator. Up and down, up and down. Squealing, whimpering. Rikku squeezed her breasts and pinched her nipples, shaking. The waves of orgasm ran up and down her body, through her legs, between her legs, up through her breasts and her arms. Up her back in ripples, in shivers.

Up her neck into her head, where they felt like a scream -- a scream muffled by the cushion against her face. She sat there, curled up, shivering and pumping and moaning for several minutes, mindlessly engulfed by spasm after spasm -- as if finally experiencing her orgasm. Finally she became quiet. Quiet and relaxed. Just lying in a little heap on the floor.

"Good girl," Lulu said. "Just drift here a moment. Let it all go and relax." Rikku rolled her head to one side, still lying with the dildo in her pussy. Almost hugging it, her eyes closed. She inhaled a deep breath and let out a contented sigh, a big smile on her face. Her bottom wiggled a couple of times, seemingly of its own accord, expressing joy and contentment.

"Very good," Lulu said as Rikku's eyes opened, She looked up to you and Lulu -- and she felt so good, so comfortable. Then she realised she was still sitting on the vibrator, skirt hiked up around her waist. Rikku looked down a moment, feeling a little embarrassed, then concluded that after what she'd been through -- with what she wanted -- embarrassment was no longer a consideration. No longer important. She looked back up to Lulu.

"Oh, that was good!" Rikku said, finding her bottom wiggling again. Awkwardly, she rocked forward and stood up, leaving the big dildo on the ground. She lifted one leg and stepped back, swaying for a moment till she got her balance. She looked down at the dildo, it was soaking wet. "You liked that, did you?" you asked. One eyebrow arched, and she smiled. "Oh, yes," Rikku replied.