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: so this wasn't today but yesterday, so yifu by riding a shark.
since i'm on spring break i decided to go to seaside with my mother since i haven't been to the beach for ten years, i'm 14, and we thought it would be fun. well at seaside we did a lot of shopping and eating and other such things. anyways we were passing by this one shop that had this cool looking robotic shark, like the mechanical bulls that you ride but a shark. so i decided why the fuck not, i might as well ride it. well i sign a waiver and stand in line for a few minutes. finally it's my turn and i hop on. my mother records a video of me flying off and injuring myself. i didn't do it the full five times, only four. anyways after leaving i now have a big bruise and rather bad burn on my arm. not to mention while i was riding my bra decided to make an escape and my top was see threw. fml.

TIFU By riding a shark