My room-mate is an ENTP and I’m an INTJ. We both have a sarcastic and rather morbid sense of humour. However, nobody actually thinks that my room-mate might kill them, while I’ve gotten plenty of comments about how people fear I’m going to kill them in their sleep. When she uses sarcasm, she changes her facial expression and voice (subconsciously) to let people know that she’s joking (TiFe). I on the other hand do not (TeFi). All my jokes are told with a completely straight face.