But on a warm summer's day out in the bright sun my genitals look altogether different. The scrotum loosens up to where my balls hang down six inches and the skin of the penis loosens too, resulting in the "turtle" effect mentioned earlier on this thread:
One reason I am now cut tight is that I didn't want that roll over. When I decided to go from semi cut to full cut, I wanted to be full cut.
Note that some guys have a shaft skin that is too narrow to easily go over the rim of head so the skin stays behind , bunching up, rather than go over.
In fact, in hindsight, the first cut guy I handled/compared with who convinced me I was cut was like that. I had seen him through short leg and had lots of ksin bunched at glans but he told me it never went over it. Once erect, I was surprised to find the skin on his shaft wasn't much tighter than mine except when moved up, it stopped and bunched up at rim of head , while mine went over head.
When cut at birth, a skin would normally never have to go over the rim of head and not widen during puberty to accomodate going over the much wider rim of head. When cut later, the skin has widened to accomodate the adult glans size, so has easier time recovering glans if not cut titghtly enough.