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: after reading tons of tifu stories on reddit, i finally decided to make my own account and submit my story. i hope reddit enjoys this! 

let me start off by saying this obviously didn't happen today, it happened approximately 4 years ago. i was always a troublemaker in my late teens, but i don't regret it at all, it made me who i am today. 

the fu happened when it was just another day at work (i worked at a local hardware store for about 3 years). my coworker, let's say his name is freddy, and i were messing around while on the job (you can do/make alot of interesting things in a hardware store). somehow we got on the subject that he had never seen or heard of a works explosion (when you put the works toilet bowl cleaner in a 2-liter bottle with aluminum foil, shake it up and it explodes). so of course, i decide to make one. we've got all the supplies within the store, so i concoct it and we both step out back of the building, hiding from the camera that shows the rear parking lot. i drop the aluminum foil in the 2-liter and seal it off, throwing the bottle towards the dumpsters so it isn't near us. here's where shit takes a turn for the worst. 

the explosion goes off, freddy and i laugh for a good 10 seconds, only to hear the sounds of screaming children. the store i worked at was across the street from an elementary school. if you've ever experienced one of these going off, you know it's extremely loud. to make matters worse, not only were the children just getting out of school, and parents picking them up, this was literally the day after a school shooting (in another state, not mine). as freddy and i are standing there, he mentions this to me. i don't think i've ever felt such an intense wave of guilt come over me, and we quickly bolt inside. 

the aftermath: our whole police department showed up at the school, children were traumatized by this event, headline of the local news. in addition, freddy ended up telling my boss in fear that he would be discovered, and i immediately was fired. at least my boss didn't tell the cops, as he was also a troublemaker in his younger years.

TIFU by sending an elementary school into mass chaos.