ENFP: May spontaneously up and move to Antarctica moments after making a serious commitment to you because they saw a picture of a penguin online that looked cute.
ENTP: May delve deeply and intensely into your psyche, make you question everything you thought you knew about yourself and then completely disappear without notice.
INFJ: May be using their warm, cheerful persona to mask a cold and calculating interior.
ESFJ: May secretly expect you to return the ten hundred thousand favors they have done for you, even though they claimed they don’t want anything in return.
ESTJ: May lecture you incessantly about anything you do that is even remotely illogical.
INFP: May be ten hundred thousand times more twisted and deranged in their thinking than their innocent demeanor would lead you to believe.
ESFP: May appear to be significantly more invested in your relationship than you are, while actually being significantly less invested in it than you are.
INTP: May fact check literally everything you say and catch you in any attempt at a lie or exaggeration.
ENFJ: May casually get you to confess your deepest, darkest childhood secrets over coffee and then use them against you if you ever seriously cross them.
ENTJ: May completely rearrange your habits, routines and long-term plans as they see fit and them and then make you think it was your idea.
ESTP: May literally charm the pants off you.
ISFP: May completely disappear into the woodwork, never to be seen again, the minute they feel pressured or intimidated by you.
INTJ: May lead you into various conversational traps through which you have no choice but to admit that your logic is flawed.
ISFJ: May secretly resent you for years without you ever remotely suspecting it.
ISTP: May flake off on a solo adventure for weeks at a time without making any contact to loved ones or the outside world.
ISTJ: May accidentally make you feel like shit about yourself because they basically lack moral vices of any kind. 
