Yes yes I freely confess, I have been known to run around with characters on steroids (Thank you ShadowKeeper), but my current palladin is clean (just say no).
Anyway on ShadowKeeper, if you edit the inventory, among the gridles (belts), I found a strange item called "belt of gender".
I haven't been able to find it anywhere in the game, so why??? It sure looks like any other game related item.
It sounds like the cursed belt from BG1 (from the Ogre in the East part of the crossroads map). BG2 preserved the item lists from BG1 allowing us to do things like cheat and keep all our old items! Including the Girdle of Masculinity/Femininity...
There is a iron sphere in the underdark area (near were we fight Drows in your way to the gnome village) that contains some traped people in it (one happens to be a lich, another a Gith [a Githaray or something like it, dont remenber the correct word of it, its the same race that attacks the ship if you leave Bynnlaw by ship instead of going by the portal in spellhold] that have that belt [or he SOULD have that belt, I got it once but I reload and I did not get it the second time] and another a gnome that his father asks you to find and some humans).