The 'WHY' Factor

There is a trait in children that can be annoying at times. Don't get me wrong... I know this is how they learn but when you are up to your ears in work or concentrating on something they will a ask a question.....you give an answer.....then

WHY?

After about a hundred "WHY's" you just want to say...'because Y has a long tail and W has none' rofl!