Frindle is a book that tells a story about a kid named Nicholas ( nick ) that invented the word '' frindle'' and he thought '' Who says frindle means pen? '' because his language arts teacher ( Ms. Granger ) had said '' Who says dog means dog? '' Then after a while, the whole school knew about the word frindle. One day, Ms. Granger told nick to come after school to her classroom. She told nick to sign a card with his best handwriting. Nick was in 5th grade. After he graduated from 5th grade and he turned 21 years old, Ms.Granger gave nick a ball point "frindle" and she also gave him the card he had writen 10 years back.Besides, the word frindle had been added to the dictionary!!