So many possibilities come from one speculation.
Hole size. Is this the meatus? Think so.
This hole size may or may not have anything to do with the power force of pissing and, or ejaculating. As a sixteen year old I shared a dormitory room with two other guys, both of whom where hung like a horse. I wasn’t. Yet both admired my ejaculatory distance. It went over my head and hit the wall high up. (It also made a loudish splat though I don’t think they ever heard that.) This is kind of gross, I know, but many mornings I would wipe the wall off with a wet sock and that was how they eventually found out about my distance. (I was shy about the whole masturbatory thing and attempted discretion but one guy was observant.) I don’t think I have a large meatus or piss hole.
Is it that the hole size makes a difference? Or, does the urethra have muscles in it helping with distance? Or is it just hose like and diameter means volume at less pressure? Or is the urethra flexible and like the anus can expand or contract depending upon some unknown condition; excitement, nervousness, volume to be expressed, a relaxed state due to some micro nutrient from the last meal?
The fellow at work has a very large glans and flaccid girth size but I don’t know about hole size. (We shared a hotel room at a work conference and he wasn’t shy about changing.) But maybe his pissing pressure and sound is due to a large hole size just as a thicker lawn hose would make a louder, deeper sounding (thundering) splash. How his weapon works in ejaculatory distance I wouldn’t know and I wouldn’t feel comfortable asking him. But if my sound was thunderous then it would seem that hole size is more complicated but having never seen any other meatus, or pissing hole, before, I have no frame of reference.
This AM had another, close to thunderous piss, but then have no immediate frame of reference and the memory isn’t that vivid in this regard, only in reference to my own personal toilet reference, the young fellows expression and memories from my youth. All of which is not terribly scientific. Maybe I should make a sound clip, not!
Sixinchman, the double hole thing is a conundrum. Do you really mean, two separate holes, or one hold that is sort of oblong shaped like a pretzel and either joined or separated at the middle? Curious.
Regarding mrlength’s remark re: girth size, an interesting question. I wonder. How would one set up a fact finding survey. Why don’t you set up the questions and speculate on the possibilities, mrlength.