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 i work evenings in a small supermarket in london. this evening two customers came in and approached me and one of my co-workers at the checkouts. as i began to serve them they spoke with a colleague of mine and referred to her by her name so i guessed they knew each other from college.

 the night was dragging on so i decided to have a bit of fun with them. when they asked me for a particular brand of cigarettes and pointed it out to me i just said we don't have it and stared at them blankly. i then proceeded to insult them when they questioned me back. they were all kind of laughing and my colleague looked a bit shocked but didn't say anything, so i decided to keep going. 

they paid for their items and i spent about 2 or 3 minutes counting their money reeeaaally slowly and telling them i needed more which was clearly wrong. in the end they said keep the change but instead i took it and then said "don't want it'", proceeded to throw the change back at them and told them to piss off. now their laughter became slightly more restrained and nervous and my colleague looked more shocked than before. still, they walked out laughing and remarked that the customer service at my store was 'strange'.

so then i have this conversation with my colleague
- "how do you know those guys?"
 -"what?"
-"how did they know you? they said your name and you replied like you knew them."
"nah they just read my name badge"
".......fuck"

i hope they don't come back tomorrow when my manager is around :p

TIFU by forgetting my co-workers have name badges