When I turned 12 that started changing, I started getting a lot taller and my muscles began to grow, my sister began to have a hard time beating me, she got taller too, but her muscles weren’t bigger, instead she started growing boobs. My sister’s boobs weren’t important though, my eyes were on Chelsea, my next door neighbor, I’d masturbate thinking of her boobs all night.

One day my sister asked my mom why I was getting stronger all of a sudden. Mom called me over to her and my sister and pulled down my shorts. “Now, you’ve seen your brother’s penis before when you were little, I’m sure you’ve noticed these orbs right below it” I got an erection while she handled my goods. Mom continued “these orbs are called testicles, and they are the source of all men’s masculinity, your brother is at an age where the testicles are starting to send out chemicals that make your brother grow taller and stronger, they will also make him interested in girls, and get his penis erect like it is now. If a man attacks you, you can strike or squeeze his testicles, doing so sends tremendous pain through his body and saps his strength. Severely damaging, severing or destroying the testicles will cause a boy to stay a boy or cause a man to become weak and less masculine like he was as a boy.“ Mom pulled my shorts back up and I went back to playing video games.

A week later my mom had to go out of town, my sister watched me, and the neighbors came by every few hours to check up. My sister and I started wrestling like we always did and after 15 minutes or so, I started winning, I couldn’t believe it, finally I had her pinned and counted to 10, when I reached 8 I felt a sickening pain flood my body like nothing I’d ever experienced, I then saw my sister’s hand in my shorts, she had a hold of my balls! “I give, I give, I forfeit!” I screamed in a high pitched voice.

“Sorry bro” she said “but no good wrestler sit idly while the competition gets stronger. She got up and led me to our father’s old workbench, pulled down my shorts and put my balls on the table. She then took a hammer out of the drawer and before I could react or do anything the hammer came down on my left ball, it was in several pieces in my sac which my sister mushed up with her hands, I was now paralyzed with pain and then she brought the hammer down on my right one obliterating it. I passed out and woke up in my bed the next day.

As the weeks passed it was as if the clock had been set back, my newly gained muscle mass disappeared and Chelsea was no longer appealing, in fact my masturbation stopped, as did all erections and my sister once again beat me handily wrestling and play fighting.