Everyone has, at some point in their life, been asked this question. Everyone will no doubt be prepared to give their answer.
So how do you know that YOUR answer is, in fact, the ACTUAL reason why said chicken made the journey which has been questioned for so long?
More importantly, who was trying to find out the answer to that question in the first instance and for what reason?
Was there more to the question than the simple on-the-surface one we now hear?