You play with her and then she plays with you. That sounds like a two-fer to you, so "I am your toy. Tell me how I can servic...er, serve you."

The nurse laughs in a pleased way. "Very good. And my first task is a pretty simple one. Just put your hand up my dress."

That is sounding too good to be true. However, you are not going to miss the chance, so you quickly get down on your knees, which puts the hemp of that miniskirt at about eye level, and slip your hand up that tight dress. A moment later you are discovering Cassandra did not bother with underwear today.

"An excellent start" A happy nurse proclaims as she leans against her desk. "Now get to to work with that hand."

This ought to get her in the mood to let you have some fun, so you quickly set to work. Your hand starts moving over her smooth skin, which is hairless even where you expect hair. She apparently shaves quite closely. But to work. You have got to stimulate that taunt skin, which your caresses and probes seem to be doing. The heat of her arousal almost burns your sensitive fingers, but she doesn't go over the top. You caress, probe, pinch, rub, and do everything you can, but she seems to be taking a strange pleasure in staying on the edge.
But finally she gives a gentle sigh and climaxes. A rather small one for a lot of effort perhaps, but she seems pleased, and you can withdraw your hand ...
...Or can you?

You start tugging, but you're stuck in her and you realize that instead of coming out, more of you is going in. You look at Cassandra in confusion, and find no comfort. "Now you are going to add to my pleasure. In you go."

You tug and jerk, but the rest of your arm vanishes up her skirt and a moment later, your head follows. You find yourself wondering how you can get your head into a skirt that was already jammed with her legs and your arm, but this is a vore school, and it is merely surprising that you can fit into a space you should not. A moment later, your even wider shoulders are fitting in.
By then, your head is sliding into a warmer hole and you are finding both of your are being warmed up by the contact. Cassandra is getting the best of it, shaking with orgasms several times as you are pulled into her. But you are hardly unaffected. Your other hand creeps to your secret center and rubs away. Your feelings become overwhelming and you explode, and do so again. Your final explosion just burns you out and you are barely awake as your toes are taken inside of the nurse.