Airline workers share some of the most bizarre things they've seen

The world's busiest airports see anywhere from 55 to 100 million passengers pass through in a year.

When you deal with even a fraction of these busy travellers from around the world on a daily basis, you can expect to encounter some bizarre human behavior.

As one flight attendant told Business Insider, you really get to see it all: "Never say never. Weirdness will always outdo itself if you challenge it."

Still, there are some things that would stun even the most seasoned airline employee.

Here are some of the most trying work conditions airline workers including flight attendants, gate agents, ticket agents, and other airport customer service reps have been subjected to: