I used to have pinhole phimosis. After a year of stretching I can now pull it back easily behind the head. When soft, I can pull it back all of the way down the shaft with no tension at all. When erect I have no problems pulling the skin back behind the glans, but that is as far as it goes and the skin bunches up behind the head and folds in on itself.
Is this normal? I'd just like to know if it'll tear if I'm a little too "eager"
... limits how readily you can pull all the foreskin back. If when flaccid, you can pull all the foreskin back smoothly, you have no concerns with the frænulum.
If the skin bunches behind the glans when erect, then that is because it is still tight, and the sulcus, the "notch" behind the corona or back of the glans, is essentially the narrowest part of the penis, so that is where the tight foreskin tends to stay.
It sounds as if you still need to make the foreskin looser for it to slip fully back when erect. If - and only if - you can see that the frænulum on the underneath is holding the skin from going fully back, then you need to stretch that (as if you had been following the instructions we give here, you would have been doing already).
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