There's Sub-Thing About Subbing...: Hilarious little stories from a real-live Substitute Teacher... The World's Greatest Substitute Teacher of all Tim - Hardcoverby P. M. Riv (Author) If you need a good laugh, this book is for you. There's Sub thing About Subbing takes the craziest, hand to God true stories of a substitute teacher and compiles them into a rip roaring, hilarious anthology. P. M. Riv, otherwise known as Mrs. Patti, Mrs. M, or Teacher Teacher, has nearly 10 years worth of substitute teaching in her back pocket with laugh out loud stories you won't believe. As a teacher of many grades kindergarten