I’ve seen this in the Older One. Now in the younger brother. There is a certain predictable progression.
The New Yorker is flipped though for the cartoons. Then a movie review is discovered. One day, you find your previously sacred “Mom has first dibs” rule casually violated, but you do a little happy dance in your heart. The Atlantic disappears along with Popular Science. Eventually all three reappear in the loo library.
The language gene has firmly implanted into the next generation. Another item check off the Mommy List.
(c)GoshGusMusic (ascap) 2010
Musical Milliner 
Is there anything left on the Mommy List? I can’t imagine more magical mommying.
Oh-so-many things! You are a dear. The date stamp becomes visible upon my expiration date.
Eventually, one or the other offspring is likely to sire his own. That’s when you will see your parenting truly reflected.
Fingers crossed. Thanks, Helen.