A teacher at school is trying to emphasise to her pupils the point of having a good breakfast, and how it makes you cleverer than those who don't eat it.
To make a point, she asks John, the cleverest boy in the class what he had for breakfast. "Muesli and a slice of wholemeal toast with jam, miss". Then she asks him how many states there are in America "50, miss".
She then asks Jenny, the cleverest girl in the class what she had for breakfast. "A big bowl of Frosties and a big glass of orange juice miss" and she asks her what the longest river in the world is "the Nile miss"
She then turns around and asks Billy, the stupidest kid in the class what he ate. "I had a stale crust for breakfast, miss". The class giggled, the teacher tutted and told him he should have something more substantial.
"Okay Billy, can you tell me where the Indian border is?" "Oh that's easy!" exclaimed Billy "He's in bed with me mum. That's why I only had a stale crust for my breakfast!"