Was bored waiting for servers to come up and started thinking of these. Feel free to add more.
-When trying to mount, something will always agro you in the last 0.5 seconds.
-No matter how long it took you to find that last mob for your quest, 3 more will spawn and agro on you.
-No matter where you are or how well you checked the area, if you go afk, for even 10 seconds. A horde will find and kill you.
-The more you're in need of an item, the lower your /roll will be when it drops.
-If you buff with a non-flask consumable (Well Fed), you WILL die before the boss.
-If you use a flask, someone will DC, need to repair, get something from the bank, or need to be replaced within the first 10 minutes.
-Regaurdless of which way you move to avoid a mob and eat/drink, it will turn and pat to you.
-If you are farming and only need 1 item, it won't drop. When it does, you will get multiple.