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 last sunday.

i had recently split from my wife and was staying at a friends house while he was out of town.  i was feeling particularly lonely one morning so i decided to the local imax and watch tommorowland.  it was opening weekend, but even so, sunday morning is not too busy.  i'd say the theater was 1/2 full.

half way through the movie, i had to pee.  i went and did my business and as i was returning from the restroom, the hottest little blonde thing i'd ever seen walked past.  did she look at me?  did i get the look?  i have to turn around and see.

insert obligatory cool-guy-over-the-shoulder-stare move.  holy crap, she's looking back over her shoulder at me!  niiiiice.

now i have to describe the layout of the theater.  i was about to walk through the doorway, take a right, and head up the stairs to my seat. i have never been in this imax theater before and although i noticed the wall that was just past the doorway the first time i entered the theater, the little blonde cutie had me thoroughly distracted and not thinking about walls.

so i'm looking at her as i take a sharp right through the door, then another sharp right to go up the... boooooom

i ran right the fuck in to that stupid little light-blocking wall that they had placed where every other theater in the world places stairs.   hard.   so hard that i knocked myself damn near unconscious.  i had to stand there, shaking my head and letting my eyes focus on... what... is that a completely blacked out wall?  why yes, yes it is.

i half consciously stumbled around the wall and up the stairs to my seat.  of course, the audience that was so intently focused on tomorrowland was now intently focused on the man emerging from what sounded like an explosion in the hallway.

yes, my forehead was bruised for the next couple of days.  no, i didn't see the blonde ever again.  it's possible i blacked out when i returned to my seat.   i don't really remember the end of the film.

TIFU by checking out chick; running in to wall