This is the classic kite this npc to a major city... with a twist. Rather than spending hours to kite an epically large dragon only for people to kill. Find the mob overlord Mok'Morokk in Dustwallow Marsh (Overlord Mok'Morokk - NPC - World of Warcraft)
The twist on this is that he is unkillable, he will get down to 1hp and never die.
Could be used for just a laugh or skilling up weapons.