Grumpy Grandpa by Heather Henson

In this book, there is a boy who has a grumpy grandpa. And this Grandpa isn't just grumpy sometimes, he's grumpy all the time. And everyday after his nap Grandpa disappears. No one lives by Grandpa except Aunt Ellie and Uncle Wilbur. One day after Grandpa's nap he takes the boy with him! If you want to find out where they go check it out from your public library. Merry Christmas! :)