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 have a silent study hall as my last period of the day, and i literally had no homework to do. since the school i go instituted that every student is required to have an ipad, of course there would be students playing games on it. my friend and i were playing hearthstone against each other.

the game was so intense, that my friend played the wrong card. i turned around in my seat and i saw him mouth to me, "i played the wrong card." i shook my head, and smacked my forehead. little did i know that i would hit that "perfect" spot and it would produce the loudest, most audible smack in the room. the moment it was done, my study hall monitor asked, "what was that?" to me, and i couldn't explain to him what happened. so i just sat there, embarrassed, everyone in the room looking at me. 

(fortunately, my study hall monitor was my band director, so we were on good terms. :d)

TIFU by facepalming during my silent study hall.