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 couple days ago. 

so i'm at my 4th grade brother's band concert, which is being held at my high school. before i went in, i decided to go to to the bathroom. i go down the hallway to the bathroom we were supposed to use (the rest of the school 
was closed off for cleaning), and i see about 15 4th grade boys standing outside the bathroom, my brother included. apparently the door was locked because the janitors forgot to open it for the concert. 

so i go up to my brother and whisper "i know where another bathroom is," because i go to this school and i know my way around. i intended to take just him over to the bathroom, so that he isn't late for his concert. 

however, being the 4th grader he is, he shouts "guys, theres another bathroom!!"

i end up leading an army of running, screaming 4th grade boys down the empty hallway that is being cleaned by the janitor. 

as we are leaving the bathroom, the janitor walks in and starts yelling at me.

TIFU by going to the bathroom before a concert