I agree with this one, but I don't agree with the "late people are geniuses" one. chronically late people are fuckin disrespectfulApologies to your friend, but fuck 'em they are wrong! (Just kidding, I'm sure your friend is wonderful.)
Sources
https://www.sciencealert.com/swearing-is-a-sign-of-more-intelligence-not-less-say-scientists
http://www.independent.co.uk/life-s...ligence-university-of-rochester-a7916516.html
https://nypost.com/2017/08/28/smarter-people-are-more-likely-to-use-curse-words/
Studies have room for error, but science is on our sides! MWHAHAHAHAHAHAHA.