Penis shape when inflated: what makes it go "curly" vs. straight like a tube?

[abstract22]

I'm not circumcised, and when I inflate, my dick kinks into a kind of curly shape, because the top end part of the foreskin doesn't inflate. I've seen many guys with the same shape. But I've also seen many guys with a "beer can" dick, straight like a tube with no bend/kink. How do I get that?

Is this just a variation between anatomies, or will the whole thing inflate in a more uniform way if I just inflate larger amounts?

[pipefitterdom]

I’m not a medical professional but when the foreskin becomes a FORTY skin after bloating up,
it looks symmetrical when stiff.
When the erection relaxes the urethra retracts so fluid shifts to the path of least resistance.
Straight tube pumping when infused to such sizes can help to even things out and make it swell more easily in subsequent infusions, even with smaller quantities of fluid.