Matt sat in class trying to think of what to do as the teacher continued to talk.
About half way through one of the boys asked about what the girl felt during sex.
The teacher looked at the boy and was about to say something when Matt had an idea. Matt activated the Chronivac and pausing the class then started to make his changes.
First Matt selected the boy who had asked the question which turned out to be Tim. Matt changed him into a buxom teen girl in a low cut top so her new DD-cup tits where on display, she also had a micro mini skirt on.
Second Matt changed the teacher's mind so he now thought the girl was here as a not so willing subject for the course. It now seems she ether came here voluntary or would be expelled.
Third Matt made today's lesson on the best way to impregnate a girl.
After making the changes Matt unfroze the class.
The teacher walked over to the new girl and said "Tina here has volunteered to be part of this demonstration, Rob your name was selected for the other person. Now the two of you go to the front of the room and undress please."
The class watched as Tina and Rob went to the front of the class and started to undress. There was a little hesitation in there moves and the teacher told them to hurry-up.
After they were naked it was obvious that Rob was nervous as his dick was quit limp.
The teacher told Tina "well young lady get down on your knees and give him a Blow Job so he will be able to perform."
Tina looked quit nervous (that was because Matt had made it so Tim know what was going on but Tina was dominate.) She eventually got on her knees and taking Rob's dick she started to lick it before taking it into her mouth and sucking it.
After a few sec. Rob's dick got hard and Rob seen that it was bigger than it normally used to be. Tina then bent down and grabbed her legs as Rob entered her.
As Rob was pumping into Tina the teacher started to talk. "Now class you can see that Tina has her ass in the air this will help Rob's sperm get deeper into her so there is a better chance her egg will be fertilised. It also helps if the girl is getting near her time of the month. Now Tina here is only a few days away from her time so her body is close to the best time. With the time of the month and the best positions used when Rob shoots his load the chance our volunteers will be parent in a few months is good."
A the teacher said that Rob shot his load into Tina.
"Now class.............."