OMG..I finally cracked it, for me anyway. On a whim, for other purposes, I ordered an inverted urethral chastity cage. Ring goes round c&b tube is inserted and locked in place to the ring. All well and good.
Now... I inserted c&b in to said ring, all well. I looked at the silicone tube and thought it looked a bit long. But hey ho, that's what it came with, who am I?
I lubed and insrted the tube and managed to get it bolted shut. Absolutely fantastic, definitely need to sit to pee now!
After about 5 mins, still no pain anywhere whatsoever, I noticed a very strange feeling from deep within, very erotic strangeness, my legs were shaking and was feeling strange and lightheaded. I felt as though i needed to cum, also felt like i needed to pee. Was very odd, intense, erotic. I grabbed a pull up, which just added to my plight.
I decided to go and have a smoke at the back door, on my way there I just felt a warm sensation flooding my diaper!! OMG..didn't even feel it, never felt in such bliss for years. Spent the next few hours just happily flooding with no pain, no control. Bliss.