Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: this happened a while ago (i don't remember when but maybe over a month)
i went to my high school math teacher's classroom early one day and saw that she put my class' tests in the back of the room. i grabbed mine and noticed that for one of the questions i got wrong, it said wrong method. keep in mind that we were doing trig identities and my teacher told us several times that there were multiple methods of finding the answer, you just need to get the right answer. i approached her and asked why i got points off, she pointed at the problem and repeatedly told me i used "bad algebra". the problem was cos(3+x)+cos(7-x) which i reduced to cos(10), i explained to her what i did and she told me i was wrong. i went back to my seat and drew up an example using simpler terms 4+16=20 2(2)+2(8)=2(10). i show her to this and she tells me that the 2 is not a quantity and my example works because it's a monomial and not a binomial like the test problem, i ask her how did i get the correct answer if it's bad algebra and she doesn't answer me. at this point i pack up my things and leave to go see the ap calculus teacher to see who's right (it was before class and her room is 2 doors down). i get to her room and within 10 seconds my teacher walks in with the same question. (i think she followed me but maybe she was genuinely seeing who was right). my teacher basically makes a fool out of herself in front of the ap teacher for not knowing basic factoring, but after a while she understands how i'm right. this is where i fu, i look at my teacher and say "is it still bad algebra" this turns her anger and salt onto me and she ends up making me seem like i'm in the fault for going so far just to get 4 points back. after class she told me she respected me for what i did (blah blah probably didn't want me to go to principle to complain) i see this teacher everyday and it is always extremely awkward.

TIFU by asking teacher about a test problem