Well Ferris does seem to be an Fe user, since he often manipulates people and tries to geton their good side, and often strives off interaction with them.
ENFPs can be extraordinarily effective in this respect. They know it's a little bit like manipulation but they're usually doing it for a good reason in their mind.
However, he also shows a fair bit of Fi, like at the beginning of the movie, when he discusses his own personal ideologies, and his rather impulsive proposal also seems like it might be part of that. However, I don't think he's likely to be an ENFP because he seems to have very strong Se. He does all that he does just to get one fun day out. He also probably has good Ni and some T function as he creates a complex and comprehensive system to avoid being caught and also manages situations on the fly. He doesn't seem to care much about anyone else and simply uses them to his advantage. All this makes me think he must be either ESTP or ENTJ. I was thinking ENTJ simply due to the complexity of the plan, but I'm not sure. Why is it Ti in STPs always looks like Te?
I think he does actually care about other people. For example, the reason he wanted to get his friend out of bed was he thought it would be good for him. In fact, that one scene is the one that came to mind for me of thinking he could be Fe because to make him get up and get out and enjoy himself - it seems like Fe ish sort of behavior.
Is it Se or is the whole thing blowing off steam senior year of high school just before college?
Maybe it would help to look at a few quotes. I'm actually seeing Ne everywhere.
"Not that I condone fascism, or any -ism for that matter. -Ism's in my opinion are not good. A person should not believe in an -ism, he should believe in himself. I quote John Lennon, "I don't believe in Beatles, I just believe in me." Good point there. After all, he was the walrus. I could be the walrus. I'd still have to bum rides off people. "
Seems like Fi to me with some Ne mixed in.
"The key to faking out the parents is the clammy hands. It's a good non-specific symptom; I'm a big believer in it. A lot of people will tell you that a good phony fever is a dead lock, but, uh... you get a nervous mother, you could wind up in a doctor's office. That's worse than school. You fake a stomach cramp, and when you're bent over, moaning and wailing, you lick your palms. It's a little childish and stupid, but then, so is high school. "
Seems like Ne + Te to me
"Pardon my French, but Cameron is so tight that if you stuck a lump of coal up his ass, in two weeks you'd have a diamond."
Seems like Ne to me
"Cameron has never been in love - at least, nobody's ever been in love with him. If things don't change for him, he's gonna marry the first girl he lays, and she's gonna treat him like shit, because she will have given him what he has built up in his mind as the end-all, be-all of human existence. She won't respect him, 'cause you can't respect somebody who kisses your ass. It just doesn't work."
Seems like Ni to me
"I do have a test today, that wasn't bullshit. It's on European socialism. I mean, really, what's the point? I'm not European. I don't plan on being European. So who gives a crap if they're socialists? They could be fascist anarchists, it still doesn't change the fact that I don't own a car."
Sounds like Ne + Fi