Smart Kid

‎​A man sitting next to a kid on an airplane turned to him n said, "Let's talk"
Kid: what do we talk about?
Man (making fun of kid): How about nuclear power ? .
Kid: Interestin​g topic. But let me ask u a question. Horse, cow, deer all eat grass yet deer excretes pellets, cow Flat dunk n horse Clumps. Why?
Man: I don’t know.. 

Child: Do u really feel qualified enough to discuss nuclear issues wen u don’t even know shit ? =)).