I worked graveyard shift for two undergrad semesters. The store was a Circle-K right in the heart of the bar area off campus (LSU). I’ve got lots of ‘drunk-and-stupid’ stories.
First off, when 2:00 AM started to roll around (liquor cut-off time), we had to take down all the counter displays. Seems that drunk students think anything on a counter display is free; especially the cigarettes.
We also had to hide the nacho cheese, or the fixin’ corner would look like the food fight scene from Animal House. Dealing with the 1:58 beer and liquor crowd was not exactly easy; but we could make it amusing. Basically, we had the right to not take any crap. Anyone who thinks “The customer is always right” obviously has never had to face drunk college kids.
Someone once set fire to the dumpster to create a diversion for a beer grab-and-run. We were never shy to jump the counter to run after a punk on a “beer run” (as long as there was more than one of us working at the time). Many parking lot tackles to my credit. 
One of the other employees (who was about 6’4" and well over 400 lbs) once grabbed a punky shoplifter by the ankles and shook him upside down until all the crap he had been stuffing in his clothes fell out.
Another worker was arrested right in front of us. The cops came in with a warrant and hauled him off. Read in the paper the next day that he had been having sex with a 5-year old girl, and taped everything. We couldn’t believe we were working with such a man. Had no clue he was such a sicko. Anyway, according to the papers, he got sent away for a long, long time.
Once, I put in a package of microwave popcorn to pop. I forgot that the microwave was industrial-strength, designed to head a frozen burrito to steaming hot in less than a minute. Anyway, I set the timer for 4-5 minutes and went about my business.
Well, the next thing I know, black smoke is pouring out of this microwave! I mean, no smoke generator in the world could compete with what was happening. It was so bad, I couldn’t see the aisles from the counter. I couldn’t see anything but smoke. I made my way to the door to prop it open, but it took all day for the store to clear out. Of course, the smell of burnt popcorn was present for a long time. Not to mention the horrid charred mess I created in the microwave.