The lesson is mixed and practical (sped up route)

Jack blinked he was sure the girls were going to leave but he guessed they didn't the teacher then switching to the next slide in the presentation. "Ok class split into pairs ideally brothers with sisters, this next part is a practical. ok girls your going to have to get out your dialators and dildos we asked you to bring in to train your boys we going to learn how to prepare them and teach them how to entertain themselves" Jack watched as Kelly got out two objects from her bag, one looked like a small thin cylinder with a rounded tip. The other was a larger more detailed fails appendage thicker than the first and longer as well with bumps and ridges and what looked like veins.

"Ok boys can you look at the screen breifly please" the boys looked at the screen, there was a black and white spiral slowly rotating on the screen, Jack felt a bit dizzy and he heard someone say the words "obey, strip, accept, bounce, enjoy " but it was over fairly quickly.

"Ok girls let's apply what we've learned so far, get your boy to the desired outcome". Jack who was now standing turned to Kelly who had attached the dildo onto his chair with a suction end it was pointing directly upwards. "Ok Jack can you take your clothes off for me please " asked Kelly. Jack was surprised but didn't see any reason why it would be a problem they were siblings after all and they probably seen most things Anyways. He stripped down removing all including his pink panties. "Ok Jack your going to lower yourself onto the chair, make sure the dildo goes into your bussy ok it's important to me". Jack didn't see any reason why he shouldn't listen to his sister , she was very cleaver of course and she always knew what she was doing he trusted her word. He lowered himself down onto the appendage , it sat at the entrance of his new boihole for few seconds before he pushed his backside down and onto the chair. It certainly felt strange to him, suddenly filling his bussy for the first time. The insertion had hurt a little but now he had sat all the way down onto the chair he felt kind of pleasurable. Kelly looked pleased smiling back at him which made him happy, he must have done something right. "Ok Jackie next were going to insert this dialator into your penis ok" she said as she held his penis in her hand before inserting the thin plastic cylinder deep into his penis , this felt uncomfortable and very strange to Jack. His Penis being full was entirely new and he didn't understand why they were doing either of these. "Ok next brother your going to bounce up and down and it will make you feel very good, you like this , you will want to continue all by yourself ok" Jack started to bounce up and down the dildo sliding up and down inside him stimulating his insides. His bussy was leaking fluid as he bounced he was well lubricated. He looked around and saw the other boys also bouncing like he was and his pace increased. "Ok boys eyes back on the board please" the teacher said with a raised voice. The spirals on the board were there again girls positioned next to there boys close to there face , Jack noticed just before he saw the board that all of the girls had also lowered their underwear and were rubbing something on the front of there crouches, he heard a sound that said "acept the reward" as he felt sticky fluid fly out of his sister and onto his face coating his face in her excellence.