First of all this is not much of a very fun glitch.

Second of all, it's not very much of a long time glitch.

Third of all here we go...

Go to the school of fire temple. Find it at the left side from the fire school. ( For example you are on the middle walk and on the left side of you, when you reach the school of fire place, out side, left of you, you see a small tower, on the right of you, you see it's class. Go to the small tower. )

Now find the place where it has something like a shield. Run up to the wall, and you go up, up, down, up, down, up, down. Now something like it, go to place where it has a picture, go to right side of the wall and run or maybe if it doesn't go up then try at the side of the table. The same thing goes at the other side. But it only goes up, down, up, down, up, down.

Hope it works!