Haukke Manor, at the most.
Finishing leveling my healers, half-asleep and not realizing I'd hit 90 on astrologian, and accidentally queue for Expert.
Slight panic moment when I load into Smileton. I am not a good healer. I can muddle through most content, but I'm not great at it.
Massive relief when I realize that A: it was an in-progress run, B: it's a warrior tank so I wouldn't have to heal anyway, and C: they're already 70% through the final boss.
Easiest expert roulette ever.
On separate occasions, I've seen a gladiator and a marauder in Pandemonium.
New healer in Vanaspati dies on final boss and then proceeds to blame us for not telling him the mechanics.
(Healer) I wish that when you say you're new that the folks who know what's going on gave you some idea.
(Me) Not everyone wants spoilers
(NIN) people like learning themselves
(Healer) I'd rather make certain we don't die.
(NIN) ggs
(Me) Classic case of damned if you do, damned if you dont
(Me) Grats on clear though, I guess
(Healer) Yeah ty
And to be technical he never actually asked for us to spoil the fight for him. We didn't wipe, we had a summoner.
Malikah Well, sometime mid to late ShB, a Thaumaturge joins the party. I pointed out that they were on a class instead of a job, they said "oops" and claimed they didn't know how that happened. They asked the party if anyone minds if they stay. I said it would be the polite thing to leave, because they're missing over half of their kit. They replied that they know what they're doing. They proceeded to never AoE at all, and when I pointed this out that if they're both not going to be on the correct job and not AoE, they really should leave. They replied that because I was so "rude" they for sure wouldn't be leaving. The party declined the vote kick and the THM proceeded to be completely useless the entire dungeon.
The other day a friend leveling his SCH (me on PLD) got so tired of BLMs ignoring mechanics and his Sacred Soil that he tried to drive the claw that stalks you on Anima (Tower of Babil) into the Black Mage. He failed, and managed to kill himself in the process. Was funny AF.