I'll sum it up for you here, read down for more info on it
Alliance has farm capped, you stand in a pumpkin, you /sit, you dont get attacked.
Last night in an AB game with some of my guildies, I found an exploit.. Some people might know about it, some might not.
Now in order to do this exploit alliance must have control of farm, when alliance has control of farm there should be a pumpkin patch right next to the flag. What you want to do is stand in one of the pumpkins and sit.
If you are a NE Shadowmeld helps this bug even better.
When you are sitting inside the pumpkin it's nearly impossible to target you unless they A) tab target or B) have shift + V activated.
This bug is really neat for healers cause you can pop up, heal, and then do /sit.. works really well.