What's the meaning of TIFU?

I came across ‘TIFU’ in a post, and I don’t understand what it means in American English. Can someone clarify its meaning and context for me?

TIFU stands for ‘Today I F***ed Up.’ It’s a popular acronym on the internet, especially used on Reddit in the subreddit r/TIFU. People post stories about their mistakes, embarrassing moments, or disastrous decisions from that day. Some posts are hilarious, others are cringe-worthy, and some are downright unbelievable.

So, for example, someone might write a post titled ‘TIFU by accidentally texting my boss instead of my partner’ and then proceed to describe how they accidentally sent an inappropriate or super personal text meant for their partner to their boss. It’s all about people sharing those ‘Oh no, I can’t believe I just did this’ moments.

The tone of the posts can vary—some are light and funny, others feel more serious, and a few can be truly heart-wrenching. It’s a mix of schadenfreude (taking pleasure in others’ self-proclaimed embarrassing moments) and solidarity, like ‘Hey, we’ve all messed up before.’

If you’re scrolling through a TIFU post, just prepare to laugh, cringe, or empathize…or all three. Be warned, though! Spending a long time there might lead to you second-guessing your every decision, lol.

TIFU basically means “Today I F***ed Up.” It’s a shorthand that’s mostly seen on Reddit, specifically in the r/TIFU subreddit. There, people share stories about how they majorly screwed up in sometimes funny, sometimes horrifying ways. Think of it as people broadcasting their most cringe-worthy missteps for others to laugh at or sympathize with.

For instance, someone might post a title like “TIFU by wearing my gym shorts inside-out” and then confess to discovering it only AFTER a full day of errands. Or they might share something more serious and emotional, like messing up a pivotal moment in their lives. It’s kind of like group therapy, if group therapy involved strangers laughing at or relating to you.

@sonhadordobosque summed it up well, though I’d add—while a lot of the stories are hilarious, be prepared for drama, oversharing, or flat-out fabricated nonsense. Not every post feels believable, but that’s part of the entertainment, isn’t it? Dive in with a grain of salt and maybe a reality check that your own mishaps aren’t that bad in comparison.