My second story takes place when I was 15 and my sister and I had seperate rooms.
When I was still in high school I was an avid masturbator. One time included a microsope.
I was seeing this girl who was really open and she told me that she would sometimes masturbate while thinking of me.
On a Saturday morning I woke up with a hard on that was like steel and I decided to try something new.
Under my bed was a microscope and I wondered if I could see my sperm with it. I got my slides ready so that when I came I could catch some of my semen and look at it.
I layed down beside my bed where no one could see me and started to rub my penis. I thought of Amy, my sexually open friend with her conical breasts and beautiful, unshaved privates. The feeling of my hand sliding up and down my seven inch cock with only precum to lubricate it was amazing.
After about 15 minutes I felt that tingling sensation that meant I was about to cum. I started to push my penis into my hand. Soon my orgasm started and I shot all over my chest and crotch. I reached over and got two of the slides and put some of my cum on each.
When I was flaccid I cleaned my self up with a t-shirt and looked through the microscope. My sperm were swimmig strong.
Amy said she wished she could have been there but nothing ever happened.