Haha, OK. In the fire dungeon, there was this room with a steel mesh floor, and lava would come spewing ever 10 second or so. I needed t to jump from one ledge to another to reach the door, but when I tried it, Link fell, and it was clear that it was too high from him to reach.
So I spent the next 3 days searching every nook and cranny in the dungeon trying to find an item or way to get past that room. When I didn't find anything (I must've searched every room 3 or 4 times), I started searching throughout the overworld. I finally went to the water dungeon, but since I was missing essential items that I would've gotten from completing the fire temple (I didn't know this at the time), I got stuck there, too. I got so frustrated and felt so lost that I finally gave up on the game. I didn't have internet access at the time, and my brother and friend were way behind me.
So, a couple of days later my brother tells me that he finished the fire temple. When I ask him how he got past that room, he tells me he simply jumped from that ledge to the other. I go and try it myself, and sure enough it works. I try it again, and play close attention, and it does look like Link's hand isn't able to reach the ledge, but at the last second it magically does. I was so mad. Mad at myself for not having retried jumping, despite it looking impossible, and mad that such a glitch exists.