most of the big cities should sell them. definitely look at inns throughout the contested zones, gadgetzan i'm sure has some. i'm not as familiar with the horde side, but i'd go to hinterlands on my NE rogue. Strong Alcoholic beverages from drink/bar vendors, drink about 5 or more, and you start seeing bubbles coming out of your toon's mouth, the perspective gets VERY wacky, and when moving forward your character will not go straight.
tibs out