Exams in an agricultural institute. Professor tells a student: Well, I see that you don't know anything. But you have a last chance. Answer the question: is it possible to make abortion to a cow? Go prepare yourself. The student doesn't know the right answer. He runs out to corridor and sees a drunk hippie sitting at the wall. The student feverishly asks the hippy: Please, come on, tell me, is it possible to make abortion to a cow? The hippie looks at him and thoughtfully says: Well, guy, I see you are in troubles...