He decides she needs to shut up for a bit

"...I wish that until the end of next period you'll have a nice big dildo stuck in your mouth."

Jessica let out the briefest of squeaks before her mouth was plugged by an object matching that description, the same bright red as her cheerleading uniform. She let out a muffled yell before reaching up to remove it, for once managing to at least partially ignore the flush of arousal she was feeling to deal with the more immediate problem. She tugged on the foreign invader by the short bit the was sticking out of her mouth, but the dildo wouldn't budge.

"Not gonna be that easy," Kevin said with a cocky smirk, "Unlike your little problem downstairs, everyone will get to see this baby. Oh but don't worry, I'm sure your magic will make it seem normal to everyone else."

Giving up on dislodging the gag from her mouth, Jessica dropped her hands to her sides and glared at Kevin, stomping her foot in frustration.

"Oh relax, Jess," Kevin said with a wave of his hand, "It's not like it's going to be in there forever, just until the end of your next class. Although just to make sure you don't skip to hide in a corner or something for the whole period, I wish that if you don't go to class, that dildo will stay in for another period, and if you skip that class another period is added on, and... well, you get the gist."

Jessica trembled as more fluid ran down her legs, enough that it starting to reach the top of her knee-highs.

"You know, you're so much more tolerable when you aren't yelling at me to stop making wishes," Kevin mused, "Maybe I should keep you like this permanently..."

Once she collected herself, she tried to say something through the gag, her face red in embarrassment and her hands clasped in a pleading manner.

"Ah, I'm just kidding," Kevin said, "Funny as that'd be, I like being able to chat with someone who knows what things used to be like. Plus I just love hearing you call me Master. Hmm, though maybe Sam would call me that if I asked her to..."

Jessica glared at him, clenching his fists in anger. If she wasn't magically forbidden from doing so, it's very likely she would have punched Kevin right then and there.

"Right, touchy subject," he said, "But consider this a punishment for trying to tell me how I can and can't use my power. And a lesson on just how generous I'm being, since if I wanted to I could exert far more control over your life."

Jessica let a big huff of air out through her nose, then tried to gesture to the gag before making some hand signs.

Kevin frowned, trying to parse what Jessica was trying to tell him, "Hmm... okay, seeing a problem already. This is meant to be a punishment for you, not everyone else who actually needs to talk to you. How about this? I wish that if they want to talk to you in a way that requires you to respond verbally to them, other people can pull the dildo out of your mouth. But I also wish that everyone prefers to see you gagged by it, more so as they hear you speak, so that when they're done talking to you or just get sick of hearing your voice they'll shove it right back in without any regard as to what you want. Oh, and just to be safe I wish the gag was attached to an unbreakable chain around your neck that you can't take off, so that you don't lose it or run away from them while it's out."

Jessica barely noticed as a thin gold chain came out from the back of the dildo and encircled her throat like a necklace, because she was much more occupied by the effect the rapid-fire wishing was having on her needy sex. Her knees buckled, and she had to lean on the wall to prevent herself from completely collapsing onto the floor. She let out a muffled squeal as the torrent between her legs resulted in her not only soaking the top of her socks, but the linoleum floor beneath her as she squirted onto it.

"Holy crap!" Kevin shouted, actually jumping back in shock, "I did not take you for a squirter, Jess! Something to keep in mind for later... for now though, I think you've had enough. I don't want you passing out before your next class and missing what I have planned next."

Jessica looked at Kevin with wide green eyes. With her heavy breathing and the way her mouth was wrapped around her new gag in an 'o-shape', the fear she was feeling was evident on her face.

"Speaking of which, I better get going too. I still need to get my stuff from my locker," he said, "Time flies when you're fucking a girl, after all. But I'm sure you're more than familiar with that, huh Jess?"

Jessica just glared back, though given that she was barely standing it wasn't nearly as intimidating as she would have liked.

"Oh, two more things," Kevin said, "I wish that once the time's up and you're ungagged, people won't remember wanting you gagged or their part in forcing you to wear it and think the whole thing was, I dunno, some stupid protest you were doing or something. And just so we can avoid pelting you with so many wishes if I decide to do this again in the future, I wish that if I wish that dildo gag back into your mouth in the future, all the other wishes I gave you related to it will come into effect for the time you're wearing it as well."

These last two wishes were enough to send Jessica over the edge again, and she moaned into the artificial cock in her mouth as she orgasmed, sliding completely down to the floor and sitting in the noticeable puddle of juices that had formed (and grew even larger) beneath her.

Kevin just chuckled at this, and left Jessica to recover on the ground while he whistled and headed off to his locker.