>>167040435Ok, here is everything I tried myself so far;
Only the penis head is super sensitive, but the xylocain take care of that. I tried a metallic uretral plug, and all that I have to do was to lube it, wait a few moments for the anesthetic works, point the plug to the right direction, and let gravity slides it inside my erect penis.
It was a relief that I didn't feel any pain, but at same time a small disappointment that I didn't feel anything at all. Although at last moment, when it goes all they way in, its kinda thrilling for some reason. It's hard to explain but I clearly can see why it's so good for roleplay.
To remove, I just waited for my boner goes away and it slided out itself. Next day my penis got scratchy. I feared that I got a infection, but it was just my uretra that stretched a little.
In short, too much work to do it alone, but I can see the potential in a bdsm relationship. Please ignore any comments above talking about medical catherters, it is nothing like that, of course lightweight plastic tubes which can easily stick inside your urethra will hurt like hell if forced in or out.