I remember this problem. It’s called “Find the Typo.”

[Hint: The typo is about +26.5 degrees from the vertical ray centered on the professor’s head, and 5 lines down on the y-axis. It should say “inverse cosecant” but instead he wrote “boobs.” Click here for more info.]

Coincidentally, I found an old high school notebook in the garage today. An unsent postcard fell out that dates back to when Teh Google was still analog:

It just occurred to me that we haven’t had an Overnight Open Thread in a while. Want to talk about wombats and weasels? Here’s your chance to shine.