I read all the Ramona books, but the only specific scene I remember from any of them is when Ramona upchucked out the car window. I specifically remember this because I was often carsick, and because I preferred the word upchuck to vomit or throw up.
As a child, I actually found the Ramona books a little stressful, because something was always about to go wrong. You know that feeling? So I blocked a lot of the books out. Other people have rosier memories of Ramona, but I like this article from WSJ, which (naturally) looks at the economics of the Quimby family and confirms that there was a bit of doom to the books.