World of Warcraft Easter Egg - Human Chicken

Blizzard are well-known for tossing laughable easter eggs into nearly all of their games. This one is a two-parter.

First, create an Alliance-sided character, and target a chicken on Saldean's farm in Westfall. Target it. Using the command /chicken repeatedly (try setting this as a macro), the chicken will eventually tire of your harrassment, and give you a "puzzling look." Now that you are able to talk to the chicken, you can accept a quest (entitled "Cluck!") which requires you to find some special chicken feed for your new little friend. The feed can be bought from Farmer Saldean in front of the farmhouse. Finishing this quest yields one chicken egg (a summonable pet, one of many in the game.)

The next chicken-related egg can be found in the Shimmering Flats (better known as Thousand Needles) on the continent of Kalimdor. You can be either Alliance or Horde for this. Travel to the goblin racetrack in the center of the zone, and look for a named chicken to be waddling around aimlessly. Approach this chicken, target it, and use /chicken once more. A cloud of smoke arises, the chicken morphs into a human, waves you goodbye, and changes back into a chicken.