The vibrating plug panties are simply the "normal" ones (purloin lpp) but cursed (curse lpp).Xhianil Fingers crossed that they are NOT hidden away behind one of the fetishes, because those are such a pain since nothing in-game points out that disabling them disables not just related items, but sometimes even NPCs (e.g., saw Aeromancers when I just started, spent ages on another playthrough afterwards looking for, not knowing they were gated behind Inflation).