Disclaimer: this happened two years ago.
In 2022 I had a flight going from NY to CA. I went to the airport 2.5 hours before the flight and checked in my big luggage. I went through TSA and headed to the gate waiting for boarding (it was Delta airline). Some notes to justify my stupidity (it really doesn't): I am not an American, and in my home country, if someone checked in with the airline but hasn't boarded yet, the staff will announce the passenger's name through the speakers, even for domestic flights. This is not the norm in the US I know. However, I also know that for most airlines in the US, when boarding starts, people will still have to line up into long-ass lines and usually this is the cue for me to start prepping and get in line.
The problem is, Delta doesn't work the same way (at least in JFK/NY). Once they announced that the boarding begins, anyone can come to board (after the priority group?). Because of this, while I was sitting with my back facing the gate (stupid mistake #1), I didn't see any line of people forming. I also missed the boarding announcement (stupid mistake #2). I kept glancing back but I still saw no one in line so I was assuming it just wasn't my turn yet (stupid mistake #3). In the mean time, I was also chatting with my friends online and generally just goofing around.
10 minutes until the flight took off, I realized something is wrong because no way in hell they haven't started boarding yet. I went and checked and all of the staff were gone and the door to the airplane was closed. I was super panicked and asked the janitor nearby and she said the plane will not admit any more passenger at this time. My heart dropped to the fucking floor because this was one of the dumbest shit I have ever done and I couldn't believe it. I went and asked Delta's help desk for help to see if I can get the next flight but there was none until the next day (it was 8pm and the next flight is 6am), and I still had to pay for it myself because not boarding was my mistake. In the end I had to get out of JFK, bought another ticket in LGA and wait in LGA until 6AM to get in another flight WHILE my checked luggage was having a trip to CA without me.
TLDR: got a flight from NY to CA. Checked in my luggage, went through TSA and everything, but goofed around at the gate and forgot to board the plane on time. Plane took off without me. Had to pay for another ticket and slept in the airport waiting for the next flight, while my checked luggage was leaving me behind.
Well, this one literally just happened. I was reading that asked which hobbies are red flags. I saw that nearly all of my wife's hobbies were listed, often with large number of upvotes. I thought it was kind of funny because we've been married for many years and the hobbies have never been an issue.
I showed my wife and laughed and said she's a walking red flag. I was laughing at the time and when I realized she wasn't laughing back I even showed some of my hobbies were listed also. Anyway, she didn't think it was funny at all. She got upset and told me she can't help that she likes those things. She left to go shopping and isn't answering her phone.
So, now I'm left wondering about the whole red flag thing and not sure what to make of it.
edit: Ok, enough comments asking for the hobbies. Guess I didn't think that through either. See for the hobbies. The big one was horses though.
TL;DR: told my wife that apparently her hobbies are red flags and now she isn't talking to me