A fook book poem

Always laugh when I sell this book, awesome title! Just goes to show never judge a book by its cover

I just sold a customer a book, I gave the customer quite a look, for the book he had took it was a naughty book, he didn't look like a crook as he took the book, perhaps he had things mistook and he was a bit shook as he took the book from my hook, I dunno everything is just forsook.