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: i had these two teachers that for some reason i mixed up. there was a group of us that were heading to the same classroom and they went to another room and me being an idiot, i though "lol where are they going?" turns out i was the idiot, walked up to the wrong classroom. the door was closed, i knocked then realized my mistake and walked away in shame. went to the correct classroom having my sister look at me laughing.

TIFU by walking to the wrong classroom