People wearing flip flops at an airport to get on a flight. Because we all paid $1,000+ to see crusty heels and gnarly toes on a six-hour flight. At least you are comfortable, right? But seriously, an international airport is not your living room, people. One to grow on.

Above: American Airlines Kevn Knudson agent assists stranded passengers [names redacted for obvious reasons] attempting to fly to Costa Rica from the San Francisco International Airport today. American Airlines grounded flights across the country because of an outage of its main reservations system. Thousands of passengers were stranded at airports and on airplanes.

We feel for all stranded American Airlines passengers today (even those of you sporting flip flops).