There is a stereotype that nerds (in general), and D&D players (specifically) are basement dwelling troglodytes (who know what that word actually means) that wouldn’t know what to say to a woman in the unlikely event one dared enter their subterranean shrine to eternal virginity full of comics and action figures.
The vast majority of the time this isn’t anywhere close to the truth. However… there have been times I’ve had players who just completely lacked any understanding of social behavior. For whatever reason these players tended to be the worst muchkins, and they didn’t much appreciate my stomping on that, and tended to drift away pretty quickly. Most of these I encountered when I was running games at the comic shop I used to work at. It was always a delicate balance between discouraging their participation, yet trying to keep them as customers. Maybe not the choice I'd have made it it had been my store, but that's what the boss wanted.
It's hard to come up with a single memorable encounter, as it's been more of a amalgam of experiences. I've yet to have a table flipping moment, though there have been one or two times when people have left the table upset over a turn of events. These don't stick out as drama llama type reactions though.
What sort of crazy over-the-top problem players and drama llamas have you seen?
This is #25 in the 30 Days of Gamemastering Challenge.