My first Urethral Opening !

I thought it would be the usual. I didn’t expect anything different. But I didn’t finish. I held back without meaning to, dragging it out. Hours went by and I stayed stuck on the edge. The pressure kept building, stronger than normal, but still didn't release, rather enjoying the horny time.
By the next day, I was restless. My whole body felt heavy, like I was trapped in a loop. I couldn’t relax, I couldn’t stop. The urge was constant, and it was driving me forward without letting me finish.
When it finally broke, it was nothing like I’d experienced before. The release didn’t come all at once. It went on and on, split into many waves. I counted them — about twenty-one separate spurts, stretching over nearly a two minutes !!
At first the release was lighter, almost weak. Then the waves of cum grew heavier, thicker, more forceful. Each one felt different, as if my body was emptying itself in stages. I looked down and noticed the urethral opening stretched wider than I had ever seen, and I couldn’t look away. It shocked me, seeing my own body working like that.
By the time it was over, the bed was a mess. I just sat there, staring at it all, trying to process what had happened. The length of it, the number of waves, the change in feeling from start to end — it was all new. I felt both drained and strangely alert, like I had discovered a side of my body I had never known was there.