When Z decides he wants you to read him a book, and yes, Z decides, he insists on sitting in your lap. He just adores reading, and will pull all of the books off the shelf and totter over to you with one in each hand. He turns the pages when he's ready, whether you're finished reading or not. And when you get to the end, he signs, all done!
Thanks Poppa for giving in to Z's reading demands!