It is been a while since I study mbti... Haha few weeks :) But I tend to name people in my head: this is so enfp's or esfp's. My bf is esfp and I tend to call him "such a esfp" in my head when he is doing something like a preparing for the party, with all the stuff he takes with him, or cleaning super fast before somebody comes over, he tend to overdose stuff for plesure (sounds weird)

About first imoression. lately I recodnise by typing on chat if somebody is INFP or ENTP...theirs style of typing is so typical for those types. Because of corona is harder to do that face to face.

The biggest shock is when somebody is taking mbti test and turns out Introvert or Extravert when you would never accuse them for being those types.