Tiny Little Fly was new to my niece, but not to my nephew. Apparently "the library lady" brought this book with her to story hour at his day care, so the boy was already aware of this book when we read it.
Four year olds love to blabber plots. :-) I'd read a page, and my nephew would tell us what was going to be on the next page. Whatcha gonna do? At least we know that he has no memory problems. He really does enjoy Tiny Little Fly, especially the ending, and I think that my niece would agree with him on that point. This was a cute story, probably most ideally suited to pre-schoolers or kindergartners.