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: today it was a slow 7th grade regular day for me, until came lunch. i went to the office, knowing my sister was dropping my lunch, and i also knew she was getting me subway, i got to the office, and my sandwich was there, i asked the office secretary if it was mine, and she said yes. so, i went to my classroom and opened my sandwich i take small bites, and so without looking i took a small bite. then i realized it had a strange taste and i looked at it and it had olives, i'm allergic to olives my sister knew that. i called my sister and she said she was at subway, now i knew something was up. i walked back to my class saying to my teacher that she was coming back to get me another sandwich, i stuffed the previous one in my backpack. my sister got to school i took the sandwich and i saw a 5th grader who i knew, he was looking kind of worried... i took his lunch.

TIFU with sandwiches