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: tifu by calling a little girl with cancer a skinhead.                             this happened a few years ago, me and a few of my friends were joking around and just having a good time at our middle school. a bit of backstory, we at the time had a friend (we will call him john) who liked to shave off his hair. so when we joked around we usually referred to him as skinhead. this was all in good fun, and john would just laugh and insult us back somehow, like joking friends do. me and a few other friends were walking back to class from lunch and, a person walks out in front of us. they have a shaved head, and it looks almost exactly like john from behind. i at the time wasn't completely thinking and was almost certain this was our friend (similar height, etc). so i yell really loud "hey skinhead". i realize none of my friends are laughing, and i was confused, until this person turned around and i realized why. this person was not john at all. it was a little girl with cancer, my heart sank and i tried to apologize but she just walked away. the biggest fuck up of my life.

TIFU by calling a little girl with cancer a skinhead