What you do not understand?

A reporter asked a guy at a bus stop in an American city , "Excuse me, what do you think of the world's shortage of meat?". The American guy asked, "What is shortage?"

The reporter then went to Ethiopia and asked a man at a bus stop, "Excuse me, what do you think of the world's shortage of meat?". The guy asked, "What is meat?"

The reporter then went to China and asked a man at a bus stop, "Excuse me, what do you think of the world's shortage of meat?". The guy asked, "What is excuse me?"