Back in march, I was in Sam's Club, and had a vauge backache, nothing too bad, but different than I ever had felt before. I had to go, so I go into the mens room, and start. About a second after I start to go, I got this horrible pain that went from halfways up my back, and it shot down to my groin area. I went "UHHH!", and the pain stopped. Just then, I see a grain of rice sized stone come out in the stream, hit the back of the urinal, and go down the drain. I was drenched in sweat instantly.
Then on the weekend of the 4th of July, in Sam's Club again, I got a repeat performance of it. This time, the pain lasted longer, and I had time enough to go, "Uhhhh, Ohhhhh!!!" and then it stopped, and another grain of rice sized stone comes out and goes down the drain. The sweats were even worse than the first time.
I guess I was really lucky, but I know it's not gonna last forever. I can hardly wait..