I used to work at a grocery store in high school and there was this one particular cashier who was overweight say 300lbs, black (not relevant but adds depth to the story), and always had a distinct smell of B.O. and stank ass marinated cod fish left in the sun for a couple hours. No one every really mentioned this to her because it was awkward as fuck, but you could fully smell her from the other side of the store when she was on cash.
Anyway we had employee washrooms upstairs in the lunch room and a private customer one downstairs where you could lock the door and have some privacy which I would always use to take shits.
So one day near the end of my shift I thought it would be a good idea to kill the rest of the time on the shitter making dat whopping $8.90/hr. Off to the customer washroom I go and as I open the door, I am greeted with the aforementioned stank but in the highest concentration I'd ever been exposed to, along with the image of said large woman sitting on the toilet with her cottage cheese thighs hanging off either side of the seat. I reacted immediately by yelling "WHAT THE FUCK!" essentially in her face, slamming the door and getting the fuck out of there. Some things can never be unseen.
We worked together for a year after this but never spoke about it. I told all my buddies in other departments though, and whenever I made eye contact with her from then on I could tell she was still tripping as hard about it as I was scarred.