Nuclear Power & Horse, Cow, Deer

Prakash Karat, the Communist Leader, was seated next to a little 5th grade girl on the airplane when Karat turned to her and said, 'Let's talk. I've heard that flights go quicker if you strike up a conversation with your fellow passenger.'

The little girl, who had just opened her book, closed it slowly and said to the stranger, 'What would you like to talk about?'

Oh, I don't know', said Karat. 'How about nuclear power?'

'OK,' she said. 'That could be an interesting topic. But let me ask you a question first:
A horse, a cow, and a deer all eat grass, the same stuff. Yet a deer excretes little pellets, while a cow turns out a flat patty, and a horse produces clumps of dried grass. Why do you suppose that is?'

Prakash Karat turns towards Yechury in dismay. Thinks about it and says, 'Hmmm, I have no idea.'  

The little girl replies:  "Do you really feel qualified to discuss nuclear power when you don't know SHIT?"