Conversation between 8 yo and Grandpa over breakfast
8yo: I just realised that Weetabix is a word you make by putting Wheat and biscuit together.
Me: Yes. Is that a sort of Portmanteau word?
[Discussion follows about portmanteau words and compound words]
8yo: I’ve got a strange sort of saying.
Me: ummm? What is it?
8yo [carefully, didactically]: The dog’s bollocks. For when something is really good.