As a teacher of maths I constantly get pupils asking questions like: why is pi 3.14? Who was Pythagoras? Why is x equal to 15? And so on. Sometimes it gets a bit frustrating when you're trying to answer such questions whilst simultaneously handing out pencils, helping little Timmy to answer question 1 and stopping several others bouncing off the walls. But at least the questions have sensible, logical answers.

I had an RE cover yesterday and I was thanking my lucky stars to teach a subject like maths: 'Sir? Why is Budha really fat when he's supposed to only eat one grain of rice a day?'

I think my suggestion of an incredibly slow metabolism might have been a little above the little year seven head asking the question.