In honor of what would have been CIDU Bill‘s 70th birthday, here are a pair of comics that he would never have understood:
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P.S. When I first discovered this strip, I thought that the “60” in the first frame might be a wonderful, serendipitous coincidence, but alas, my math was off by a decade.
Comics I Don't Understand 
Happy birthday, Bill! I wonder if the lawyer who kept (mis)using your email misses you, too.
Happy Birthday, Bill, wherever you are!
Bill, you are missed.
The second one brings to mind the frequent quip in cat-oriented strips, “Dogs have owners, cats have staff.” I guess in that latter case, interviews might be in order.
Happy birthday Bill!
(You mean that I am OLDER than Bill?! Lately I seem to be older than everyone I meet or think about.)