Two cows

Two cows are standing in a field, talking to each other. One cow says, "Hey, aren't you worried about getting that mad cow disease everyone is talking about?"
The other cow says, "Why should I? I'm a chicken."

Two more cows are standing not too far from the first
two, One turns to the other and says "Moo !" The second looks at the first and says "Damn!, I was just about to say that!"

Yet another two cows are standing not too far from the
other four and one turns to the other and says "Baaa !"
"Baaa ??" asks the second "Why did you say Baaa ?"
The first one replies "I'm learning a new language."