I had the same experience with the scrotum. I once took a megadose of proviron (425 mg) and for about 2 days, my scrotum was loose just as it was pre pssd. Then it went back to baseline. Ive taken the same dose of proviron, even more, but never got this effect again.
Does anyone know something about what causes the scrotum to become tight or loose, except temperature? I suspect it is somehow connected to my complete loss of sex drive. If I recall correctly it is during puberty that the scrotum becomes loose, and it’s also at about this point that one experiences a real sex drive. It also has something to do with the “blue balls” sensation one gets when sexually frustrated. I don’t get this anymore at all.