Sparring with Cassie

I had some inspiration while reading "Sparring with Cassie" from u/havldavl so I decided to write my own version.


Since as long as I can remember, I've always been fascinated by girls kicking guys in the nuts. I don't know why, but I find it insanely hot. I'm mostly a nice guy though, so I've never been kicked myself, not even by accident.

A few months ago, I joined a martial arts gym. Mostly to learn how to defend myself, but since there are a lot of girls, I was hoping to get some material to feed my ballbusting fetish.

The first time I saw Cassie spar, I knew I had found the jackpot. First, she's insanely hot. She's got big, perky tits that she likes to show off, and long, really muscular legs that look like they can do some serious damage. And the best part is that almost every time she spars with a guy, she ends up giving him a full force kick right between the legs.

With the cup, there's not that much of a reaction and they seem fine after taking a break, but she always teases them about what would have happened if they didn't have the cup. And I'm pretty sure she has a lot of first-hand experience.

This was driving me wild, and I finally got a crazy idea. First, I thought of just “forgetting” my cup the day it was my turn to spar with Cassie. But it would have been really suspicious not to tell her beforehand, particularly knowing her reputation. I didn't want to get outed as a pervert.

And then it came to me, what if I just customized it a bit so that it looked fine on the outside but didn't provide any real protection? It took a few tries to get it right, but I managed to get it done. There was now nothing standing between my nuts and Cassie's fearsome kick, except my flimsy gym shorts.

I bought a new cup while waiting for my turn to spar with Cassie (I didn't want my first kick to the nuts to be from one of the guys…) and I patiently waited for the right opportunity.

After a few days, the coach finally paired us together. I was really excited, but also very scared. Cassie's legs were so muscular… What if her full force kick crushed my nuts for real?

Once the spar started, my unease kept growing. Her kicks were really strong and I struggled to block them correctly. I started to get second thoughts. Maybe I should block the ball kick that I knew would come at some point.

Unfortunately, Cassie was a much better fighter than me, and she soon had the perfect opportunity to deliver her customary full force kick, right between my legs. I could only watch her foot coming up like a cannonball, impacting my poor testicles with tremendous force. She had clearly not held back, and it nearly lifted me from the floor.

I immediately knew I had made an enormous mistake. The pain was so much worse than anything I had imagined.

"My balls! My balls! You crushed my balls!" I screamed, tears streaming down my face. I couldn't believe how much it hurt. It was like my nuts had been turned to mush.

Cassie knelt beside me, her face a mix of surprise and amusement. "I can't believe it," she said, laughing. "I finally managed to rack a guy for real in sparring."

I couldn't believe I had been so stupid. I rolled onto my side, curling up into a fetal position. "My balls... they hurt so much..."

Cassie tried to comfort me, cooing softly. "I'm so sorry, Jack. I don't know what happened, your cup must have been defective." She gently rubbed my back, trying to soothe me. "Let's get it off and check the damage, okay?"

I nodded weakly, still clutching my nuts. Cassie carefully removed my cup, revealing my swollen, bruised testicles. She winced at the sight. "Wow, I really got you good," she said sympathetically. "They look pretty bad."

I groaned, tears still streaming down my face. "My balls... I think you broke them..."

Cassie gently cupped my balls in her hand, checking for any serious damage. "They're really swollen, but I don't think they're broken," she said, trying to reassure me.

She gently massaged my bruised testicles, trying to relieve some of the pain. "You're gonna be okay, probably…”