So, young ap, age 5, comes home from school with a little "rhyme" book he's made in class. It has two letters - "at" - on the inside rear cover and a series of "pages" on which are written other letters to make words ending in "at" when turned over to face the reader.
Therefore, we have c + at = cat, b + at = bat etc.
Imagine mine and Mrs Woofage's surprise when we come to the word beginning with "sh"
!
We meant to warn his teacher this morning but forgot. He's a very bright boy so probably made the thing all by himself with little intervention.
