Cheat sheet and dummies
I find that two phrases are being increasingly wrongly used. They are "Cheat sheet" and "for dummies" like in XYZ book for dummies. Cheat means getting something by unfair ways and now there are a lot of people who are proudly posting in Linkedin " here is a cheat sheet for Python", "here is a cheat sheet for XYZ". And then about dummies, the sense in which it is used is to mean a stupid person, you can find hundred of books that are written probably by some generalists that are called something like ".... for dummies". What is the need to add a negative flavour to a positive thing?