That's exactly the same story se with my foreskin. This automatic roller is surprising girls/ladies (female sounds not so sexy to me) and enjoy it a lot.
Interesting I haven’t seen anyone else talk about this before, but mine is exactly like that. Even at my smallest you can see down to my urethra and the default resting position of my skin is about two thirds hooded with tip exposed and just beginning to grow causes what I have termed autoretraction.
From completely covering the glans 'at rest' my foreskin automatically retracts over and behind the corona ridge as I become aroused/erect.
Despite how many 100/1,000 times I've seen it happen I still find it fascination to watch, as from their comments have all my partners who've seen, or caused it to, happen.
This is a very interesting topic because it demonstrates how variable the functioning of the same part of the body is among men. According to what medicine teaches us (and multiple studies on the subject), usually in an uncircumcised penis during erection occurs automatic retraction of the foreskin. Obviously we are talking about the penis of an adult or at least after puberty. One might wonder why. Basically because with the erection the size of the penis increases, without there being a proportional increase in the skin that covers the glans, which therefore tends to retract (also thanks to the traction exerted by the frenulum). However, this involves three questions that allow to complete my reasoning.
1) Should the entire foreskin be retracted automatically (in order to have the glans fully exposed) once the erection is complete?
2) Since the adverb "usually" was used, does this mean that there are cases in which this does not happen?
3) If this does not happen, is it a symptom of some medical problem relating to the penis?
1) There is no fixed rule. When we talk about retraction of the skin with an erection, we often refer to a complete retraction, as well as to the exposure of the whole glans. However, some men (perhaps the majority, but I'll come back to this later) may have only a partial retraction.
2) Exactly. Perhaps only, in exaggeration, half of men always have a complete retraction of the foreskin following an erection. In most cases, either this does not happen in every erection or it always happens but only partially. Even an inexistent retraction of the foreskin with erection is also infrequent. It should also not be forgotten that if an erection develops when wearing underwears, they will inevitably favor some skin retraction (as opposed to when you have an erection with the penis "free" from various constrictions).
3) Not necessarily. I state that the important thing is not to have phimosis: it is essential to be able to retract the foreskin at any time and uncover the glans (for hygienic reasons and sex). Still with reference to the erection, however, it is not decisive that it should be done manually or not. So you do not have to worry, except in the cases described above, if you need the hand or if the foreskin does not retract by itself. The anatomy of the penis should also be mentioned. In fact, there are guys who, while being able to completely lower the skin without problems, have a foreskin that is not very elastic or too long and consequently never have an automatic exposure of the glans during an erection.
I conclude by highlighting again how influential the length (and the related elasticity) of the foreskin is. In fact, those who already have a short foreskin in the flaccid state will always have a complete retraction of the same with the erection.
