There are a number of Dr Seuss style mathematics books for elementary school mathematics. It occurred to me that there is no particular reason that that style of prose couldn't be adapted to a playfully worded advanced math text book. I'm not particularly attached to what topic, I'm just thinking something along the lines of an advanced undergrad or graduate level text, has any one seen such a book?
It seems like it would be a fun project to do with some notes that you want to write up but want to make a bit more interesting to read. Assuming that someone hasn't already done just that.