GENETICS. Really. Yes, if I lost some weight, it would go down, but I have NEVER had less than a 1” fat pad. (even when I was a well oiled professional athlete) You also seemed to ignore the measuring issue with “NPEL”. 8” BPEL is very large, really. The dick size doesn’t change AT ALL when the fat pad changes. I’ll be back next week to debate. ;)
It’s more of a cosmetic thing, for the illusion of extra length, like shaving (shaving around the area makes it appear larger).