Things in maplestory that rustle your jimmies.

The Temple of Time quests.

"You can only enter this one room. Kill 999 enemies in this room in order to get to the next room!"

"You can now move to the next room. Now kill 999 enemies in that room to get to the next room!"

Ugh.....

It's 333 each now just in case you didn't know.

I agree though. I did it at 999 each before too.