My all time favorite ‘wft are you thinking?’ moment was a game when I was only 17, way back in 1979. Four of us played and rotated GMing. We played 6 characters each and the three of us playing would each pick two to put a party together.
One of the guys had a dungeon where there was this 100’x100’ block of 100 10’x10’ rooms. The contents and the doors changed every time you went through them. If you went forward one room, then went back to the old room, there’d likely be something different in the room than when you were there seconds ago.
So we were young and stoned out of our minds and, having a full day to game, decided to each go in with our full groups. Each of us would get a few minutes and an encounter, then we’d go to the next guy. Dave gets lost in the maze (which was on the 2nd level) while me and Jim head down a few levels. Dave walks back into a room he’s unfortunately been in at least 5 times, and there is a fountain in the middle of it. Detect Magic. Yes. Detect Evil. Yes. So his Cleric walks up and pours Holy Water into it.
The Water Weirds attack, grab him, pull him in and he dies. :eek:
Oh man, we laughed so hard. Why would you walk up to an evil magic fountain and pour holy water into it???
Then of course, since he doesn’t have a live Cleric, he’s wandering in circles getting destroyed. Jim and I had to go back and rescue his party.