https://xkcd.com/320/
(The only thing worse than trying to get a child who isn't tired to go to sleep is a child who is too tired to go to sleep.)
Apparently I also still have a sense of humor. Or maybe I don't, because perhaps pretending one doesn't get the joke of doubling down on xkcd silliness is perhaps a joke in itself, which I didn't get.
https://xkcd.com/320/