"This won't be the last time we do this," Kristina found herself saying without even thinking. She blushed as the words faded away after she spoke them and she wondered why she had even said them. It was because Derek had told her to and she had obeyed without thought (or intention to follow through on the promise). There was no time to dwell on the fact that she had made that promise because suddenly she found the powerful vibrator pressed to her pussy. There was no time to object, Derek had been swift and stealthy in his attack. It did feel like an attack too. As soon as the high-powered toy sprang to life, the vibrations seemed to invade most of Kristina's lower trunk. The feeling wasn't just topical at her pussy, no, the vibrations penetrated deep inside her.<br/><br/>"Fuuuuuucccckkkkk," she moaned at the sudden stimulation that was like nothing that she had ever felt before. Her back arched down towards the bed and she found her hips pushing towards the toy as her pussy lips seemed to part from the vibrations and the toy nestled itself deeper between her folds. "Oh, fuck...oh...fuucckkkkk...." she continued to moan in surprise and pleasure. Knowing Kristina so well, Derek may have been surprised at her choice of obscenities. Kristina rarely cursed, but here she was dropping f-bombs like an immature middle-schooler.<br/><br/>"Fuck Derek! I'm gonna cum again!" she moaned lost in the lust that had been building in her since the morning.