True story. A hot rancher buddy and I like playing together man to man and enjoying sex. We are both big into castration and love playing at castrating each other and sharing our many other male sex kinks for fun. One hot session, we decided to have a contest of who is braver and tougher ? Competing with each other. So we got naked and got into a 69 position and dared each other to have a contest to see if we could edge as close as we could to really castrating each other. See who surrenders first ? We d both suck on one of the other s big testicles. Both of us have very big balls.  Too big to get both balls into our mouths at one time anyway. Our contest was to burdizzo each other s nut cords in our teeth by slowly increasing our biting pressure to see which of us would capitulate and surrender first ? Giving up in defeat before he got painful crushed nut cords above his balls and risk losing his ball permanently ? So we start our contest and we are both biting down on each other s one set of nut cords. Slowly increasing our biting pressures over time. Sucking on the other s ball. Stopping and asking each other if he is ready to give up and surrender or not ? Then we both started ball sucking and stretching out each other s ball cords and sack as we increased the bite pressure on each other s nut cords painfully. Both of us are groaning and grunting in ball pain but we both refuse to surrender. Slowly we both bite harder in unison, trying to match the other man s biting pressure ! We are nearing the limits of damaging each other s nut cords ! But we are both too stubborn and competitive to surrender. Suddenly as we both near our pain limits, my rancher buddy bites into my left testicle ! Sinking his big front tooth into the front of my left nut ! I pull off his ball and yelp in pain and surrender to him instantly ! He keeps his tooth embedded in my ball, not letting go. I can feel his tooth has cut into my ball. But he keeps steady pressure on my trapped ball. I catch my breath and repeat my surrender to him. Telling him how I can feel his big front tooth inside my ball s outer shell ! YOU BIT INTO MY BALL ! I SURRENDER ! I GIVE UP ! DON T CASTRATE MY BALL ! YOU WIN ! PULL YOUR TOOTH OUT OF MY BALL ! YOUR TOOTH IS INSIDE MY BALL ! PULL IT OUT CAREFULLY ! 
He pauses to relish his tooth being inside my ball. Both of us panting in extreme excitement and me in fear that he might destroy my left ball ! Slowly he releases his bite pressure and we can both feel his tooth slide out of my testicle. YOU BRANDED ME ! YOU FUCKING PIERCED MY NUT WITH YOUR TOOTH ! YOU BRANDED MY BALL WITH YOUR TOOTH ! FUCK ! 
Our dicks are both throbbing hard and drooling salty sweet pre cum all over. We stay in our 69 position talking all friendly and surprised about what just happened between us. I ask him if my nut sack is bleeding or cut open ? He looks closely and feels my sack and says NO, NO CUTS IN YOUR BAG. MY TOOTH GOT YOU THROUGH YOUR SACK, LIKE A BURDIZZO,  WITHOUT CUTTING YOUR BAG AT ALL ! 
I sit up to check my sack and ball. It's aching some but not wildly painful. More like right after you get a cut and the worst of the pain is passed. My buddy asks if I m OK ? I say I think so, no big swelling or bruising or cuts are visible. I think your tooth burdizzoed my left nut without cutting my bag ? But it cut into my ball instead of crimping off my nut cords ! We both feel the bulge in the front side of my left ball,  my bigger and lower hanging ball. My long scrotum makes it easy to feel both balls and my nut cords in detail. Nothing else seems damaged, hurting, or changed. But my left ball definitely has some of my soft inner ball pulp bulging out of his tooth shaped cut in my ball ! I try pushing the bulge in. But it stays hard, under pressure, not pushing back in. I tell my buddy we almost burdizzoed each other by not giving up ! He asks me if I m pissed that he cheated and bit into my ball so hard ? I tell him no. He probably saved both of our balls from dying from crushed nut cords ! If he had not bit my ball to force me to give up and stop biting his nut cords.we d both keep biting harder. Our pride and stubbornness would have killed our balls, if he didn t bite my ball so hard to stop us in time to save our balls ! I told him I already have injuries from past sports hits to my balls and past sex adventures. Wearing his fresh brand on my left ball is fucking cool and awesome ! I m his branded bull now ! Wearing his brand proudly on my left nut ! We both laugh and get off on that hot idea ! Cowboy branded by his rancher stud buddy ! Right into my left nut ! How cool is that ? Something to brag about and show off proudly to my friends and lovers. He appreciated that. Made him proud ! Just like ranchers control us cowboys anyway. Bossing us. Now, years later, I m still proudly wearing his brand ! His tooth mark bulges with my soft testicle inner pulp now scarred into place permanently ! It's hard and forms a clear bulge in his tooth shape. I asked an animal vet buddy about this ? He says it's harmless scar tissue and don t worry that it's testicle cancer or anything. Because that part of my ball was smooth and perfect before my rancher buddy sunk his tooth into my ball. Cancer would not instantly form right when and where he pulled his tooth out of that cut in my ball. My soft inner ball pulp and tiny tubes in there bulged out as soon as he pulled his tooth out. That s not cancer my vet buddy says. My rancher buddy says my great pride in wearing his brand proves that I m ready to be castrated by him for real ! I tell him, NO, A BRAND IS NOT CUTTING MY BALLS OFF. I M ALREADY YOUR BULL AND BRANDED TO PROVE IT ! I m not your steer or ox, not just YET.