Aim: glans expansion. technique: urethral dilatation

The urethra is longer than 25 cm. In my opinion it is unclear what happens from a physics point of view. I will check and tell.

Actually it really isn’t unclear from a physics perspective. ( That is what is so great about science, accurate predictions based on a foundation of data, knowledge instead of feelings and faith.) Just think about a squirt gun, the tinier the hose the more pressure and the farther it shoots. If the squirt gun had a tube the size of a garden hose, what would happen when you squeeze the trigger? ( no pressure build up) it is this very resistance that causes the water to squirt out further, you can guarantee you won’t be shooting as far by practicing this, and that isn’t an opinion or based on feelings, but on the concepts within physics.

Very interesting on going through the prostate, now for the first time I understand the thrill of this. I am sure it must be similar to getting a good ass fucking?

I have a set of these, and can also vouch for the effects being described above :)

Bigger pipe diameter equals smaller fluid flow pressure, it’s really that simple. :)

I vaguely recall the highschool flow physics your referencing but as we know the human body can rarely be compared to simple plumbing interactions with much accuracy. The urethra is more than a pipe!

Interesting. Will be curious to hear what other men report.

I’m not implying that is the case but if he is too small on the urethra he might be loosing shooting distance because he might need a stronger “pump”.

Physics is clear as glass but biology is different: in the “hose” there are two tight spots, one close to the gland, one at the beginning / exit of urinary bladder. These contain smooth muscle sphincters and what is unclear is: how is the sphincter recovering after the dilatations. It does recover to a certain degree, I now know it, because session after session I can go a little further with respec do size of sound. The hose, even directly after dilatation, collapses just like all other hoses in the body which contain smooth muscle.

Anther unclear factor is: what happens to the intraprostatic part of the urethra and to the prostate itself, which forms both a static and dynamic component of the inner sphincter.

So beware of direct application of physics to biology with overly simplistic models (“hose”). Once you know all border condition, physics, of course, do not loose their validity in biology.

Can you expand a little, and mention shooting distance in particular, please.

It’s interesting to think about - I’ve got a pretty big “gash” style (as opposed to little round hole) urethra and have never shot very far.

Anecdotal evidence, of course.

It’s not just resistance that determines the flow but also the force behind it.

As for passing through the prostate and into the bladder. Fuck that! I feel sick just reading this thread. Reminds me of mega-futa porn where one futa girl is fucking the urethra of another futa girl.

Why the hell you want a bigger urethra?

Hard to explain. I’ve actually thought my is quite small, it just affects urination.

Okay I’ve decided I’m more interested than horrified. I don’t quite understand your dimesions. What is F? Are those the lengths or widths? Surely not widths. If 1 F = 3mm and the smallest is 16 F then that’d still be 4.8cm wide. Did you mean 1mm = 3 F?

Haha Oh god I just randomly thought about this thread when my dick was out. Imagine you slipped with the little tool and rammed it deep down your urethra. Ouch!

Lol high five for a fellow futa fan ;)

How could it effect urination? I don’t get it. Do you want the piss to literally just come out in big bucket loads and last the total of like 2 seconds. You’re normal, wow urethra size doesn’t matter one bit. I totally understand PE, and even to some extent ball enlargement but come on the fucking urethra? Really. I mean the other benefits from this don’t sound to bad but it’s still way to disturbing. Like any head size increases would just be because you’ve stretched out that urethra pipe.

Use it like a change purse…..