The Wabbajack is a Staff in Elder Scrolls V: Skyrim.
A blast from the Wabbajack with an unpredictable effect.
This can loose a vast assortment of effects. You can turn people into Chickens or any number of food items.
Followers of Sheogorarth will approach the Dragonborn after they get the Wabbajack and ask them to "Wabbajack them"