I had a female cousin - Katie. She was of my age and lived not far from ours. That day I was playing with her in our garden. There were only two of us; my parents and sister were out in town. We romped around for about for half an hour and then Katie said:

"Just wait a bit, Gene, I have to go and take a pee."

And she went off into the bushes. After she disappeared behind the leafy stems, I discreetly sneaked up to the bushes and started peeping. On noticing me, she exclaimed "Gene!" and got abruptly up to her feet, pulling her panties up and adjusting the skirt.

"Shame on you," she said coming out of the bushes, "It's not good peeping such things. You, boys, are lucky - you can go behind any tree and pee there standing upright."

"You envy boys?" I asked.

"Yeah, you, boys, have peters. It's so convenient."

"But do you know that all boys, and me too, are very weak down there?"

"Where?"

"Didn't you ever kick a boy between his legs?"

"No," she said. And that was true. Katie being rather a shy girl, never had tried to abuse any boy's groin. I suddenly felt a great wish to show her how having a convenient peter meant possessing vulnerable sack in the bargain. And I said:

"Katie, you must kick somebody in the balls to see how you are lucky not to have them."

"Kick? But who?"

As there was only one pair of testicles around, I said:

"I guess you should kick me. There's no other boy over here."

"Will that hurt you?"

"Sure it will, nothing can be more hurting than balls kicked."

"But why then.., why do you wanna be hurt?"

"Just because you envy me my having a peter. And to be true I sometimes envy girls..."

"Envy girls what?"

"I envy ..," I stammered, "well.., you see, I don't care much about my wiener and balls. You may hurt them alright. Okay, let's go inside the house not to let anybody see us."

Soon we were in my room. I took my stand opposite Katie, my legs wide apart.

"Come on," I urged her, "give me a good kick!"

"No, no, I can't," the girl hesitated.

"Why, it's so easy - just kick me and you'll never envy any boy, no more."

"No, Pete, I.., I..,"

"Well, do it half your strength then, you'll see balls are so easy to hurt."

"Pete, maybe next time..."

"Alright, let me show you how I'm weak down there - just give me a flick in the balls," I yanked my pants down to reveal my boyish possessions to Katie. "Here are my balls - just flick them."

Katie wavered for a while, then stepped up to me, raised her hand close to my balls and gave a light flick to one of my testicles.

"Ouch," I exclaimed painfully, clutching my scrotum and stooping over.

Katie gave a light giggle:

"You're pretending, Pete. It can't hurt you. It's just a flick."

The pain indeed didn't last long. Very soon I was standing straight up again, feeling just slight aching in the testicle.

"No, I'm not pretending at all. It's really painful. You can't understand it because you've no balls. Now just kick my balls to see me in real pain."

"Pete, I've no wish to hurt you."

"Katie, please..."

"Pete, I believe now that boys' balls are very weak. Please pull back your pants up."

"But you haven't seen how weak my balls are yet. Okay, I'll hurt my balls myself to make you see..."

I looked about the room, saw a plastic ruler on the table and reached my hand out to grasp it.

"Just look here," I exclaimed, placing the ruler close to my groin. I pulled down the end that was beneath my scrotum and then suddenly released it, letting the ruler flew back right up into my hanging testicles. This time the pain was a score times greater. My legs at once softened and I collapsed onto the floor. For a few seconds I couldn't even breathe, and then emitted a long moan. Clutching my throbbing balls in my both hands, I wanted to tell my cousin how they were terribly aching and how I wished they were replaced somehow by the thing she had between her legs, the thing that couldn't be so easily abused just with a ruler flick. But I couldn't say anything but groan.

Instead of laughing at me Katie just cried out: "Idiot!" and ran outside.

 

I hadn't seen her for about two weeks till she suddenly appeared in our garden with her girlfriend Ira. They both came up to me and Katie said:

"Hi, Pete! We came to ask.., well.., do you remember you wanted me to kick you in the balls?".

"Sure, I do," I replied.

Katie smiled and said: "I came to say I want to kick you now. If you still wish, of course."

"I'm not sure," I looked at Ira, "you're not alone now."

"You said you envied girls, do you still do?"

"Yeah, I still do," I replied.

Katie turned to her girlfriend:

"You see, Pete, Ira says she envies boys the way they pee. I guess she envies them badly, so you can help her. I want you to stand by some tree and pee onto it with your legs wide apart. And that's when I'll kick you between your legs from behind."

I couldn’t believe what I'd just heard. Girls wanted to get some proof of the fact that being a girl meant possessing a body that I was so envious of. Surely I was ready to help them in that.

"I agree," I said without any hesitation. "Let's do it by that oak."

We walked up to the tree, I took a position facing a wide trunk of the old oak, spread my legs, unzipped my pants and took my penis out. The both girls stood right behind me.

"Pee," I heard Katie command and let a squirt of urine out onto the tree bark. To add more excitement to the situation, I started teasing girls provocatively:

"Hey, girls, see what I can. I can write my name on the tree trunk with my piss. No girl can do that! It's nice to have a peter. No need to squat down to take a pee! Being a girl sucks!

All of a sudden I felt a foot flew into my crotch from behind.  It was Katie who so broke off  my speech. A killing pain pierced my testicles to make me let out a shrill scream. My penis bounced up, letting the urine squirt splash over my shirt, my hands grasped my balls and I tumbled down.

"Balls, balls, my balls," I was trying to say something else but the burning pain in my testicles didn't allow me to utter any other words.

The girls started giggling and Katie said:

"You see, Ira, how boys are weak down there. No doubt Pete would prefer now to be a girl rather than a boy with all that ability to write words on trees with his piss. There's nothing more embarrassing for boys than being so easily put in so much pain by girls. By girls who have neither peters, nor balls to be so weak down there."

I just groaned to express my agreement with Katie's words and squeezed my poor balls harder. I looked up at the girls' shapely legs, at their short skirts that covered their groins, the groins I envied so badly, and then looked at my hand holding my own groin. The girls noticed my eyes' movement and the jealous gleam in them, and gave out a loud laugh...