Requires you to be on the horde quest [Stay a While, and Listen] in Jade Forest (I made a typo on the quest name in the video). And the engineering glider.
What you do is que for a BG, wait for it to pop, then click on the teapot right before accepting the port.
use the macro /run AcceptBattlefieldPort(1,1); to enter the BG instead of clicking enter.
Working BGs are TP, SotA, IoC.
basically it work with maps that won't teleport you "outside" of the map. AV is a good example, however, in AV, if you log out and login you will be in the alliance start place, and you can troll them while waiting for the BG to start.
This also works in instances if you queue by them, however I haven't found any this is useful in, and that doesn't take you outside of the game map.
Warlocks summons unfortunately does not work
Credits to DanteLarka for discovering the exploit in this thread: http://www.ownedcore.com/forums/worl...ml#post2564219 (How to get to Alliance base before WSG start as horde / godmode 20 seconds.)