This is one of the better books in the series because Andy and Terry's publisher now wants them to babysit his grandchildren for a day. The grandchildren keep causing trouble and Andy and Terry have great adventures along the way.
This book is hands down my favorite in the series!!! Andy and Terry do everything they can to get a pen that writes jokes only to notice that they never really needed it. With jokes at the bottom of every page, this book keeps you laughing throughout the whole book.