. If poison is past its expiry date, is it more poisonous or is it no longer poisonous?
. Which letter is silent in the word "scent", the S or the C?
. Do twins ever realise that one of them is unplanned?
. Why is the letter w, in English, called double u? Shouldn't it be double v?
. The word "swims" upside down is still "swims".
. Maybe oxygen is slowly killing you and it just takes 75 - 100 years to fully work.