In the "Master Quest" of Ocarina of Time (stay away from that game!),
At one point you enter this room in the Spirit Temple. In said room, there is nothing but two doors, a small chest, a beam of light coming from a wall and one of those little sun icons that you have to shine to get something good to happen.
Clearly, I have to get one of the doors to activate. Hur hur, easier said then done unfortunately.
Now, I don't have the Mirror Shield which I am supposed to acquire in this temple yet, so I'm forced to use the only other interactive item in the room, the chest. I open it up, hoping to find a key for one of the locked doors. Is that what I found? Neoooo.
Instead I get a trap that froze me in place.
>.<
What to do?
I circled the room, hitting every wall with my sword, scanning the ceiling for switches I could shoot, exploding the floor randomly.
Then, I decided to take out my hammer and try some experimenting.
That's when I heard the magic Zelda chime. Guess what. I unlocked the door by hitting the open chest with a hammer for no particular reason.
Who is supposed to guess that?! Rage.