Now, I've outlined a few delay-mechanisms, in my pages on self-bondage, and here you'll get one more (a little advanced perhaps).
The key, with the chain attached to it, has been attached to my piercing-stick, by unscrewing the ball, pulling the chain over the stick, upon which I re-screw the ball.
Having done this, I grab a carafel, made from a good sturdy glass, and sucks my penis, and my balls into it.
Next, and final step, is ti padlock my two seperated hancuff-cuffs together, with the padlock, which key is in the carafel...
Only option is to pee enough, to eliminate the vacuum inside the carafel, which will then let go of my cock'n'balls, allowing me to get at the key.