He's kind of hard to type. I gave him an online test and it said INFP. He wasn't sure on most of the questions, though. He doesn't really seem like INFP in a lot of ways, and he really doesn't seem like INTP. I'm thinking ISFP, but I'm not sure. Here are some things about him:
He's an artist and musician. He's going to college for an art degree, plays guitar, and sings and writes music. He cares about fashion and is kind of a hipster, but doesn't really take himself seriously.
He doesn't really seem to care about much of anything. He cares about making art and music, his friends, and a few social issues really bother him. He likes being politically incorrect though, and gets annoyed with people on both sides of the political spectrum. He's kind of a conspiracy theorist (and so am I, so we get along). He's a really good friend and generous person.
He's really silly and ridiculous. I like that he's fun.
He likes saying outrageous things just to see what response he'll get. He likes playing the devil's advocate, but not really in an NT way it seems. Like I don't see him trying to organize information into any kind of a system or make logical arguments. A lot of times he says critical things when he's in a bad mood. Not to the people he's with, but about society or other people. In an inferior Te way I think. He's never been judgmental towards me.
He has trouble expressing his feelings in words sometimes, and is kind of private.
He says negative feelings stimulate his creativity. He doesn't seem to mind feeling any certain way.
He used to drink a lot and use drugs, and now he only drinks and uses marijuana socially.
On the N/S I don't really know, maybe you can think of some follow up questions.