There are a lot of reasons to get frustrated over a flight delay, and the pilot forgetting his passport is definitely one of the most valid.
According to The Korea Times, a T’way Air flight from Ho Chi Minh City, Vietnam, to Incheon, South Korea, was supposed to take off at 10:35 PM local time on Friday, but was delayed 11 hours, and only departed at 9:40 AM the next day. According to the low-cost, South Korean airline, the postponement was due to one of the aircraft’s pilots losing his passport.