एक बार मुस्कुरा दो

First-year students at Texas A&M's Vet school were receiving theirfirst anatomy class, with a dead cow. They all gathered around thesurgery table with the body covered with a white sheet.
The professor started the class by telling them, 'In VeterinaryMedicineit is necessary to have two important qualities as a doctor:The first is that you not be disgusted by anything involving theanimal body.' For an example, the Professor pulled back the sheet,stuck his finger in the butt of the dead cow, withdrew it and stuck itin his mouth. 'Go ahead and do the same thing,' he told his students.
The students freaked out, hesitated for several minutes. Buteventually took turns sticking a finger in the anal opening of thedead cow and sucking on it.
When everyone finished, the Professor looked at them and said, 'Thesecond most important quality is observation. I stuck in mymiddlefinger and sucked on my indexfinger. Now learn to pay attention.Life's tough, it's even tougher if you're stupid.'