Always gotta make sure they stay down. I have no clue what story time could be since last time was about characters who won't stay dead.

I once had a tiefling in pathfinder with 22 AC at level 1. I took more damage from allied alchemist flasks than anything else.

Hmm how about some bad things that have happened after a GM says to roll a spot check or something similar

"Roll a spot check."

"Okay." *rolls*

"The prostitute appears perfectly healthy."

"Oh, screw you!"

"Yep, that's some lovely floor tiling in this hallway."

"You look directly into the sun. You see things that you didn't see before."

"ALIENS ARE REAL!?"

That sounds more like Call of Cthulu.

"you don't see a tree in front of you. take 1d3"

Okay, that was a critical success, so here's what you see:
the orb is made with the dark magic of the tower, and by looking so deep into the void you can feel the void stare back, dark tendrils assault your mind and attempt to violate your soul as you are permanently made more sensitive to the tower's black arts. But you also gain this clue to the tower's inner workings.

The rest was kept secret from the rest of the party. That character had horrible nightmares that night.

Mine's a little different - it's one of my pet peeves with GMs now - "That's what's realistic" - yes, it makes sense that a rogue trader would use a bomb of sufficient strength to take out an entire mountain to assassinate a rival, but it doesn't make for a good story to instagib the party off one failed demolitions roll.

Anyway, the one in this case was a Hunter: The whatever game - there was a Vampire club in town, and we were looking for a specific person of interest, who would be there that night. First thing we had to do was find them, so I joined the crowd for that night. 20 dice, 3 successes over the course of a few hours. "You notice there's gum stuck to my shoe."

What happened after that? Well, the campaign shuddered to a halt, of course, we didn't have any other leads.

This is why single point of failure designs are not good. You succeed, one thing happens. If you fail, another. If it's a dead end, you should have other options to follow. If you do nothing, the plots advance, and you may find the next step a bit more challenging without that useful bit of information, or having not been able to cut in earlier.

I've got one from the weekend. Sometimes even the best checks are foiled by the players. The party advances down a corridor, and notices something odd about the floor ahead - far too little dust and debris on a 10x10 square. A quick check, and yep, that's a pit trap alright. As the rogue checks out the trigger mechanism, the cleric pushes the halfling warlock onto the trapped floor.

GM: "The warlock scrambles to safety. The halfling didn't cause the pit to open..."
Rogue: "Must be broken. I walk across."
GM: "...because she weighs significantly less than 100lbs (45.4kg). Make a Dex save."

I'd be surprised if a characters armour and equipment didn't add enough weight to put them over that limit, even if they were a halfling. Of course, how many D&D groups these days actually pay much attention to encumbrance?

She tallies in at about 60. A little heavier than the typical light-armor-and-few-weapons types, but she some rather large, er, bonuses for social encounters.

Huge tracks of land.

Huge tracks of land.

Huge tracks of land.

Huge tracks of land.

okay....... why the heck did it post so many times?

because the tracks of land where that huge

God damn TRACTS.

@Inbetweenaction
Best comment. Hat off to you.

It usually only posts twice when that kind of stuff happens, but this time it needed four posts because the tracts of land were just that d*** huge!

After failing to notice the third ambush in a row with my Catfolk Samurai: "ok, now I understand how I failed to save my lord: I never saw them coming".

Fortunately for said samurai, the summoner and the courtier have a better sight.

This guy is un-fucking-believable.

The other night we started a 5e game using my friend's character sheet app (because all you do is plug in class and race and stats and it auto-inserts all the info you gain from that) a True Neutral Elf Monk named Valtorn, a Chaotic Neutral Fighter named Bob Barker, and my Neutral Evil Gnome-raised-by-Goblins named Alvyn. I know, heroes and "evil" aren't supposed to work, but that is how bored we were. Nobody objected to anybody's suggestion and I am literally pulling storywork out of the DMG's random encounter/build charts. Practicing my ability to improvise and having some stupid fun.

The story starts in Loudwater in Faerun. Valtorn is meditating in the town square water fountain. Bob is cleaning house playing dice (until the other guy starts cheating). Alvyn is cheating at dice and making a killing (not the same game). Bob is trying to figure out why he's suddenly losing after doing so well and realizes his opponent is doing something. Next roll aces that problem and he busts the creep and threatens him out of the money because EVERYONE in the bar reacted when Bob shouted "Cheat!" and people were fighting. Bob goes to collect his winnings only to find it all gone and narrowly notices Alvyn sprinting out of the door with his little gnome pockets bulging full of stolen silver coins. Valtorn stole a coin out of Alvyn's pocket, distracting the gnome (and I also rolled 1 on my Acrobatics to run away) and Alvyn hits a wall. Bob reclaims his money and then Valtorn and Bob travel together to meet the mayor because they're seeking adventure when they hear a scream. Alvyn is stalking them for an opportunity to either rob or cut the spines out of these two (Rogue Assassin Archetype). We hear a scream. Bob and Val run to investigate, Alvyn continues following. For fun, we used a d12 for arbitrary determinations of mental, emotional, and alignment oriented reactions. The only thing I was succeeding at was following these guys. I failed my Perception to notice it right away, I failed my History to recognize a shrine to the Kuo-Toa Goddess (the dice were weird when I was making choices...) but my "personality" dice was like "ALL OF THE FUCKS!" and I rolled max on character interest. So I don't recognize the girl who is dead, I don't at all grasp the value of the shrine I am looking at, but by GOD do I care that it's there! This must be the most significant find in the history of my entire, twisted, gnomish life! Look at that gorgeous fish...frog...lizard...gecko...thing! And that dead girl with her heart cut out! I have all of the fucks to give and all of the feels for it!

We had to stop there because Valtorn needed to go home. I'm going to decide in our next game what I am going to make Alvyn's fixation on the shrine mean.
Probably also going to pick Bob's pocket for that Black Pearl necklace the dead girl was wearing. It was shiny, and it was important to this, whatever it was. Therefore it is important to me and I must have it.

...Oh gods, if rolls go the way they have been, this pendant is going to turn into a parody of The One Ring.

Well, that sounds fun.

We already had a meme for that "Eversthings fine, and now X attacks/happens".

You see, in a Group I was GMing (Homebrew System and World) my Players were working for the Equivalent of the Mages Guild (only that outsiede the Free City the Inqusition would ... happily kill all the members) to retrieve some Long lost starmapthingy (unknown to them it was not actually all that important. Sure, old and incredibly difficult to make, also pulls People in if they arent careful, but not IMPORTANT) and the killed a competing Group, lied to their Mage Guild Ally, betrayed them to the Inquisition, threw said ally into the Thing and changed her Race, Age and Class, and other strange stuff. And all the while ALL of them managed to overlook the small but noticeable ... "precious" THings the Guild hat put on their Capeclasps. To record all of that.

Only one of them survived, by virtue of being quite strongly corrupted by his semidemonic heritage (we used a "and this happened to you before you became a Hero" System, and he was REALLY unlucky...they thought).
So his "uncle" saved him, teh rest of the Party is dead AND HE STILL DOES NOT KNO HOW THEY FOUND OUT.

Some bleeding damage and poisoning would have been of use.