The next experience Tim told me was about his biology lesson the second week he was at school.
At the end of my biology lesson the teacher called me over and said as I was new at the school I would have missed the puberty and sexual education class he gives to the second year boys who are 12, and thought it would be good if I joined his class the next day. He told me he had already arranged it with my sports master as I would be missing the sports lesson.
The next day when I got to the class room the teacher introduced me to the other boys explaining that as I had not had this lesson and would be joining them to hear it. He started off explaining how boys go through puberty and it can start at any time form about 10 to 15 but for most boys it starts when they are 12 so for some of you boys in the class it will have started. When it does happen you will notice changes to your body. One of these changes you will notice is hair growing in different parts of your body for example in your arm pits. Have any of you noticed this yet?
I put my hand up as about 5 of the other boys. I see we have some early developers and also Tim who at 14 will have a lot of the signs of puberty.
"Tim perhaps you can help me demonstrate the changes, please take your shirt of so they can see your arm pit hair"
I was a bit surprised but knew I had to obey the teacher so quickly took my shirt off and he got me to stand in front of the class and lift my arms up. He came and stood by me and pulling on some of the hair asked if they could all see it. "Yes sir" the class replied.
"Now do any of you know where else hair will grow when you go through puberty"
One boy put his hand up, and said near your penis sir
"Yes that's right and it is called pubic hair, Tim will show us what it looks like please take off your trousers and underpants".
I could feel my face getting red as I undressed then stood naked in front of the class. He came and pulled on some of my pubic hair explained the shape was in a triangle. Then he got hold of my testicles and got everyone to look them. "You will see boys that Tim's testicles are now quite big when you go through puberty your testicles will drop and get bigger these are what produce semen which boys use to fertilize girls eggs"
One of the boys put his hand up and asked how boys fertilize girls' eggs.
"That is a good question as you know from your biology lesson last week about the female body girls have a vagina and inside her there are millions of eggs. To fertilize them a man needs to insert his erect penis into her vagina and ejaculate his semen inside her. In order to do this the man needs to have his penis massaged to bring him to the point of ejaculating. This is done by pushing in and out with the sides of the women's vagina massaging the erect penis"
As he was talking about this I could feel myself getting an erection I had never heard anyone talking about sex like this.
"Teenage boys are very fertile and are always ready for sex which means after puberty you will get lots of erections like Tim has now, and it is perfectly natural to get them as I am sure some of you boys know already.
"Do any of you know a way to relieve the feeling when you get excited like Tim is now"
One of the boys put up his hand "is it masturbation sir"
"Yes that right masturbation is when you use your hand to simulate the feeling the vagina gives you of massaging your penis. Once you have ejaculated your penis will subside until you have recharged your semen resource. Do you all know how to masturbate?
Some of the boys shook their heads too shy to actually say no
"Well rather than me explaining how it's done we can use Tim as an example" The teacher looked at me and said "Tim please show the class how you masturbate"
I felt so embarrassed not only was I naked with a hardon in front of a class of second year boys but now the teacher wanted me to wank off in front of them.
I looked at the teacher then the class and slowly started pulling my foreskin back and for. As I was doing it the teacher was saying that besides the manual stimulation I am sure Tim is also thinking mental stimulation like having sex. "Is that right Tim" "yes sir"
After a few minutes I could feel myself getting close and the teacher stopped me
"Now boys I want you to see Tim's testicles have moved up which means he is close to ejaculating and I want you to all see the semen" he got a big glass bowl and put it on the front desk "Now Tim before you ejaculate I want you to tell everyone when it is going to happen"
I carried on wanking and when I felt the feeling I was going to cum I shouted out and everyone looked closely as I shot 9 or 10 jets of cum in the bowl. I felt really exhausted.
The teacher then got some small glass slides and put some of the semen on them and took them to 6 microscopes and said we could all see the semen swimming . He called me and the other boys over and we all took turns looking. It was amazing seeing my semen swimming around and I forgot for a moment that I was still naked, it was only when one of the boys touched me on my bum to ask to see that I remembered.
After I had another look down the microscope the bell went and the teacher said we could go. As I was getting dressed the teacher came over and said I had done a good job it was the first time he had ever tried doing a lesson like this with a model. He said it was the Sports Masters idea and that he thought I would make a good model. He said not everyone could have done what I did and as a thank you gave me extra marks in my biology
There are more school experiences that my Uncle Tim's has told me about and I will write another one down soon. Let me know if you have any questions or comments.
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