>>2666206
Same, been inserting headphone wires folded in my PP as a kid, which I found rather fun to see how deep it goes, even played that with a friend. When it bumps against the prostate that's the spot, no need for a big dildo in the ass, anything small enough to fit in will do the job.
>>2666238
Use something thin, like a wire or a small tube, make sure to clean it and most important - stay clean.
>>2667224
Can't tell I don't try to stretch my urethra, just see how deep the pp hole goes and what I can pump out of it.
It's really exploring what's in there.
KY gel is good but I have precum for that.