Sans Forgetica is a free-to-download font that supposedly helps you "remember your study notes", designed by typographer Stephen Banham and the Royal Melbourne Institute of Technology's Behavioural Business Lab. It's a remakably hostile mindhack: the letterforms are designed to be difficult to read without losing their legibility, thereby "prompting your brain to engage in deeper processing" and "question the gestalt understanding of type".
I'd like it more if it were a deliberate prank, a typographical equivalent of the Jimmy Kimmel skit where he tricked Fashion Week attendees into praising a model wearing a watermelon on his head. It's called semiographic closure, honey, look it up.