How is “fit up” used?

In Bad Education (2019), one line is: “you know, I just thought I was a really good fit up here.”

Which movie is “fit up” from?

The clip at the top of this page is from Bad Education (2019).

you know, I just thought I was a really good fit up here.

2 作品で登場 · 1 本目

句動詞

to supply sb / sth with all the equipment, clothes, food, etc. they need; to make it look as if sb is guilty of a crime they have not committed

2 本の映画に登場

1
fit sb / sth out / up (with sth)
to supply sb / sth with all the equipment, clothes, food, etc. they need
to fit out a ship before a long voyage
2
fit sb up (for sth)くだけたイギリス英語
to make it look as if sb is guilty of a crime they have not committed
I didn't do it — I've been fitted up!

定義：Oxford Advanced Learner's Dictionary 第 9 版