Tilting Cow

Q: What do you call a cow with two legs?
A: Lean beef.

Worries about Mad Cow Disease

There were these two cows, chatting over the fence between their fields. The first cow said, "I tell you, this mad-cow-disease is really pretty scary. They say it is spreading fast; I heard it hit some cows down on the Johnson Farm."  The other cow replies, "I ain't worried, it don't affect us ducks."

Under a Cow

Q: What do you get if you all sit under a cow?
A: A pat on the head!