Masturbating and losing control of urine

[Kubotaman]

I have had this very unusual experience a number of times - masturbating in the shower with soap with my left hand and rubbing the very tip of my penis with the palm of my right. the result is a total over the top feeling which is so intense, I am almost compelled to stop but if I keep on, I totally lose control of my urine - even if I have just emptied my bladder. I can do this 4 or 5 times and urine flows each time and the feeling stays just as intense - totally awesome - but many times does not lead to a climax. anybody ever tried it or know what is going on here.