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 about 2 years ago and i'm posting this now since i just found this subreddit.

it was a saturday morning and i had an appointment with a new physician my mom was trying out so *this was the first time we ever came here*. so at about 10 am, my mom drove my brother and i to the office. we all walk in and we quickly check in and in no time, i'm getting my weight checked and all that shit. the real reason why we were there were to get vaccine shots we haven't gotten in years(probably less), so my brother got his shot quick and then it was my turn on the hot seat. (but before going on any further, i just need to say my brother and i have been surprise-slapboxing each other in public places for a while now before that day so i gained some fast reflexes and a lot of paranoia along the way.) the thing is, my brother was standing behind the doctor and i couldn't see him so i let my guard down for a second. i looked to my right and shortly after, i felt a slight grasp on my left arm. so without thinking and all in one motion, i flung my arm into the physician's face yelling, "bitchh!!" in the most funniest yet fucked up way. right after i quickly realized that i slapped this old slovakian physician to her knees holding a needle in her hand, later realizing she *could've fucking stabbed herself* during the fall. now i look around only to see my mom covering her whole face and my douche brother almost tomato red trying to hold in his laughter. i then try to relieve the situation by quickly helping her up but it didnt help at all. she was shaking really hard trying to hold up the needle to give me the shot. then when she did, she quickly got up, said goodbye and speedwalked the fuck out of there. this was now the final realization that i totally fucked up and didnt get to say sorry because at the moment, i was shocked at myself for doing such a horrible deed.

TIFU by slapping my physician while holding a vaccine shot