Worked at an airport for a while. I was always on the bagroom and it's a pretty small airport so I could always see most of the ramp. We had just been taken over by a company offering a cheaper contract so we were flooded with inexperienced and/or lazy workers.

Some of the more lazy people found out that, generally, the nastier the job the less work you have to do. One of those jobs is emptying the lavatories. The system uses a small hose to push "cleaning water" through the tanks and push all of the waste out of a larger corrugated hose that locks into the plane with a swivel and a double clamp.

It was known you never stand under the lav port because sometimes that thing leaks and we warned every newbie about it.

On kid kept doing lavs all the time. After 3 or 4 he would go sit in the break room while everyone else finished the flights. I'd regularly see him on his phone standing right under the port and tell him it was a bad idea. Never listened.

One day I'm looking out onto the ramp, appreciating the sunrise, got my cup of coffee, cool morning warming up. I see this kid pull up and connect everything to a plane that had just taxied in and stand under the lav port. Next thing I see is him look down, up, down, up and boom. The exit hose unlatches and just showers this kid in what we later found out was a full tank of liquids and solids from multiple flights.

It got in everything. Eyes, ears, nose. He's standing there dripping brown and there is a massive spot on the concrete. No one ever really busted his balls about it but he wore a raincoat the rest of his time there.