Why?

A recent conversation between Mateo and Nico.

Mateo: "What are they doing?"
Nico: "They are cleaning the sugar cane."
M: "Why are the cleaning the sugar cane?"
N: "Because it's dirty?"
M: "Why is it dirty?"
N: "Because it was in the earth?"
M: "Why was it in the earth?"
N: "Because that's where it grows."
M: "Why does it grow there?"

So to conclude ... Mateo has entered WHY land. So far, it's been funny. I wonder how long we'll think this??????