When I first met Twinmold in The Legend of Zelda: Majora's Mask, I had no idea how to fight the thing. Tatl said something about shooting it in the head and the tail, so I tried it but the things kept moving around too much and I kept either dying or sinking into the sand at the edge of the map. Finally, I reached the frustration point and decided to see if that worthless giant mask would be of any use against Twinmold. The fight then became quite easy, since I had the gilded sword and I wondered why I spent so many hours without trying the mask.