Peeling in a diaper until it is almost bursting is how I like to masturbate. I use the swollen mound of diaper to push my cock against. I will pee on myself whenever i'm in the shower and especially when sitting down to shave the goodies. A nice pee cleanse is how I finish off.
I do enjoy sleeping with a full warm diaper. And yes I will fill it too much sometimes but I will sleep on a Chux that I got from the hospital after the kids were born. They are soft, thick, water(PEE)proof and washable.