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: when i was in middle school, i had some asshole friends i sat with during lunch. on this particular day, september 2nd, 2005, i was arguing with one of my friends at lunch about nothing. he got, what i think is irrationally annoyed, took his plastic water bottle and white knuckled jerked the shit out of it, getting me, the table and the floor all wet.  you can imagine the shock on my face. but that shocked look turned to  joyful glee as i watched this old lunch lady approach the table. i may have lost the battle, but i was about to win the war. but this hag of a lunch lady looked at the spill and then looked at me drenched with water, points her ugly, stubby, witch-like finger at me and says "mop it up!"

i didn't understand... the gods must be playing a sick joke on me. so after pleading my case, i slowly stand up and start towards the mop. to finish setting the scene up, we were sitting at the last table in this giant lunch room, farthest from where the designated mop station was at. so as i'm walking passed the rows of lunch tables, everyone is conversing normally without a care in the world. however, as soon as i touch the mop handle, the entire room fell silent and watched me slowly roll the mop and the mop bucket to my table, (which was common in middle school lunchrooms). so as embarrassing as that was, it was nothing compared to looking at the smog smile from that asshole friend as i mopped up his mess. once i was finished, i go and return the mop back to its spot. as i am heading back to my table, in the distance, i can still see that smog smile of his. i start pointing and mouthing insults at him, hoping to gain some dignity or at least hurt his feelings alittle. however, i don't notice this sweet mentally-challenged girl who had just gotten her lunch and was heading back to her table. i accidentally run right into her, knocking her and her lunch to the ground, (i'm a pretty big middle schooler). i completely freeze up. i would say i'm a nice guy for the most part, so i don't know why i didn't quickly apologize and help her up; i just stood there frozen. you can also tell that the whole situation didn't register with her yet, as she just starred back at me. after the longest 2 seconds of my life, she started to scream. not expecting that at all,  and in my confused/embarrassed state, i panicked and quickly walked back to my table, sat down and immediately put my head down, wishing that didn't just happen, (i still feel bad for not helping her). what made this story the worst, is that none of my friends saw that encounter... except that asshole who sprayed me with water. you can imagine his reaction to all of this....

TIFU by accidentally knocking a mentally-challenged girl and her lunch to the ground.