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've been with my so for around 4 years now, and my mother has hated him for as long as she's known him. i thought she was just being over protective and doing the "no one is good enough for my daughter" thing but today i found out why exactly she hates him so much. i useually always have bruised on my inner thighs from bite marks, and other places as well. i thought it was obvious what they where from and since i have no shame and actually kinda like showing them off to the world i didn't think about it. she had thought he was beating me. well, in the bad way. i tried to explain what was really happening but she couldn't understand why i'd possibly want to be hurt. she doesn't believe me and thinks that's my cover story.

TIFU by being a masocist