For some reason when I use a thigh potion with a butt potion, even when everything is right, it still says I wasted a butt potion. I assume this is a glitch because it says to use a butt potion if you use a thigh potion from what I can tell. Also even when a character has all black clothing and I use the butt potion it says I wasted it. But maybe I'm not far enough in the game to understand.