Not sure if exploit, if not move to guides. Found this yesterday and couldn't stop laughing. Basically just find some flying bug critters, (I use the ones right outside Alliance Shrine because everyone will see them) and polymorph them while you have Glyph of Crittermorph - Spell - World of Warcraft active. Be creative! Switch around your glyphs to morph them into monkeys, penguins, ect. Best part is if you have Crittermorph glyph the morph lasts for a day, I forgot about them and came back hours later and laughed my ass off all over again.
Some pics:
imgur: the simple image sharer
imgur: the simple image sharer
imgur: the simple image sharer