Although this episode is offensive to hens and all types of chickens... this episode can be rather funny in parts including the beginning-middle before it gets stupid.
There is a strange man that is invading chicken's huts and raping their little butts. After a sick starting scene and the whole beginning and the "Disruption of the South Park town".
I enjoyed this episode for its clear story and hilarious parts, but in other cases it was crude, rude and just silly. Some episodes of South Park are great and others are just colourful and crude. This episode is one of the crude ones.
Good episode :)