Dildo improvements

Sarah scratched her forehead for a second.
"On second thought, I have a better idea. Now let me think...do all of you know what anal beads are?"
Some of the girls nodded, while others said no. Jon rubbed at his painful buttplug, wondering what Sarah was planning.
"Ok, I guess you don't all know. That's fine, I'll show you. I wish I had an anal bead dildo here, right now!" Suddenly, Sarah gave out a yelp and grabbed her butt. "Damnit! I wish I had these beads in my hands, not my ass...and they better be clean, too!" The beads appeared in her open hands, clean.
Sarah held up the string of beads. "Now, this only has four balls, but yours' will have ten, and they will all be much larger too. These beads will be very important to all of you from now on. For when all ten balls are firmly up your asses, you will feel normal, but as you pull them out, your body will become more and more aroused and you will feel more and more horny with each ball you remove. If you take the beads out entirely, you will be super horny nymphs, and will remain so until you put the beads back in place.
"Now, I wish that an anal bead dildo, like I just described, was up all of your asses, in place of the buttplugs I wished for earlier."
Again the room filled with squeals and shrieks, muffling Jon's own cries. The new buttplug was much bigger than the first one. Feeling under his tight clothes, he could only find a small loop of plastic cord. Jon pulled the loop and with some discomfort the first large ball pulled out of him. Suddenly, Jon had a hardon; painful given his new clothing. Jon pushed the ball back in and his erection disappeared almost instantly.
Before he could think of anything to do, Sarah said, "Now, I'm going to give you sluts something all good sluts need, a..."