Continuity mistake: In this book, when Manny calls Greg "Bubby" during the school play, which is in early December, Greg then says he has been able to keep that nickname quiet for five years. However, in the very next book, Manny states that he is only three years old. Plus, that would mean Manny is two when Greg makes his statement, unless Manny's birthday is in late September, October, November, or early December. Greg's statement is actually ambiguous, and if you interpret it another way, if you can figure it out since it's difficult to explain, it would then make sense and be less of a mistake. But let's just say that Greg should have used different wording.
