"The overlapping double curtain fly on the classic men's underwear is not designed to be an exit port. It's to maintain coverage during reduced and expanded cargo situation. It's design for comfort stretch without risking exposure or restricting blood flow. It is NOT designed as an exit port. Those that have tried to drive the straight long bus out of the S-shaped driveway found out that it fails.
so really the overlapping double curtain fly is for retractable expandable comfort. One size to fit for all occasions."
I've read this over several times now, and I still don't have a clue what you're reasoning is. I've somehow managed to snake the unit thru that double curtain with no trouble at all for many, many years, even in pitch dark, and occasionally in conditions where dropping trou would have resulted in borderline frostbite. Today was a good example, hiking in temperatures that varied from 19 degrees F to 24 degrees F. Pulling one's pants down to pee, thereby exposing tender bits to the elements, when there is a convenient port clearly(at least to me) designed to be used for just that, seems a bit peculiar, to say the least. Perhaps if one exists in a state of perpetual tumescence.....