I thought of this question because someone joked about double-dipping their hands in the chocolate fountain at Golden Corral and boy did that invoke one of my least favorite paying-for-college memories.
Yes, someone did dip his hands into the chocolate fountain at the Golden Corral. Worse, he was a repeat offender, a man that was at least in his 30s if not older slurping it off of his fingers and all, sometimes while making eye contact with me or my coworkers. Worse, there was no enforced rule against doing so, at least at my location, so my manager just told me to let him do it, don't make a big deal out of it, and hope he doesn't bother anyone else.
That same manager once insisted on me making the place extra clean a little before Christmas, so they insisted that I use double the amount of cleaning bleach in the same bucket. I explained that's not how cleaning works or how OSHA compliance works. I got a write-up. I said that wasn't an offense that qualified for a write-up, and what they said was "thanks for the tip, I'll find something that is. Your word against mine." 
That same manager punched me out early without telling me, because the place wasn't perfect enough before I left over an hour late, missing my family waiting to pick me up outside by that long to go out to do holiday stuff. I did call that in on the supposedly anonymous tip line later, but you can guess what happens when an anonymous tip about wage theft is called in on a manager that already knows who would call in that tip in a "right to work" situation. 
That same manager was fired a week later for embezzlement, and not the cool kind. They were writing up and firing people for months for money missing from the register. I found out when collecting my last check and noticed someone new. 
I have my own story but it's longer, maybe I'll post later.
A woman I worked with was like, super into this job, took it very seriously and kind of also thought of herself as really good at the job and felt kind of self important or whatever. She had been there a while, longer than almost everyone else.
We had another worker get hired, same position as all of us, and she started off making quite a bit more than I started off making. I got hired for 13, she got hired for 16. She sucked. So. Bad. Less than zero productivity, literally only creating more work for other people. We couldnt tell if she was sandbagging or actually really really dumb, for real. For some reason management refused to even slightly do anything, and it just screwed us over again and again. Her dad probably knew the psychotic owner or whatever, which wouldn't be the first nepo hire there.
By that time I was making 17 or 18 bucks. A couple of us gossiped to the first woman in the story, that it was so annoying to have to work with the new hire, etc. We also told her the nepo was making 16 bucks, and how crazy that was compared to what we all started with, but we told her in a way that it was immediately obvious that we were already making a little more than 16, not less. We weren't sounding pissed in the way you would if you were still making less than the dumb nepo asshole.
She tried to smile through it but it was total devastation - her face was literally twitching.
We immediately realized, with 100 percent certainty, that she was still making less than 16... and knew we were all making more... including the nepo dumbass... despite her putting tons of energy into the job for longer than any of us...
JOKERFIED. HARD. She left pretty quickly after that.