There are two cows out in a field in Britain. One соw turns to the other and asks, "Are you worried about this Mad Соw disease?" The other соw responds, "Nope." The first соw exclaims, "How can you say that? Cows all over England are getting it. I'm scared stiff!" The other соw just looks at him and says,
"Mad Соw disease, why should I be worried? I'm a helicopter."