First campaign in my life, MERP. After a fairly good idea to search for hidden tunnel where a stream exited a cave, we got a lot of very bad rolls. In terms of rolemaster it means not only that we didn't find anything, but that we're sure there's nothing to be found. Instead of thinking a way to roleplay our characters into trying it again, we decided to set off. Our DM thinking quick, figured an another way into the complex, and air vent. We somehow managed to screw this one up as well (I don't remember how specifically) and we ended up down in a strange, dark tunnel, injured and without most of our stuff. After an hour or so of wandering around, I produced a piece of parchment and a quill and begun to draw a map, based on turns we've made (yay for the well equipped and seeing in the darkness dwarf!).
Since we were fairly sure it was a maze, the sensible thing to do, would probably be to get some point of reference, or at least mark our way to see if we come back to some spots. But planning is for sissies, and we were making a map! After a lot of aimless wondering, I realized there were two major problems:
a) not all of the turns were 90 degrees
b) not all of the corridors were of same length.
Both of which the DM was trying to hint time and time again, better yet - with his patent "there's something very wrong" cheerfulness. And we figured it out only because one of the players was bored enough to roleplay some, um, basic routines, closely connected to eating. About 0.6 meter in straight line, in fact.
Saved by stepping in dung, we somehow found our way out, and even recovered the MacGuffin. Several
sessions later, we left the complex by the exit at the cave, all nearly starved to death (which isn't easy to do with MERP iron rations. We spent quite a while there). We were so proud of ourselves, the DM didn't have the heart to tell us until a few months later, that it was supposed to be a quite short, introductory session. As in a single one

And then, we proceeded to boast in front of quest giving dwarven prince. As he was hostile after such glorious success (taking several weeks to get him what he needed within days), we sort of snapped, and were thrown out of the city. Our primary goal because of which we took the quest? To get into that city. Yay us!
And that's just what I can remember to be from this one, short campaign (I later noticed that I tended to fuse memories of other's screw-ups with this adventure). There literally was no part of it that we didn't manage to screw up in one way or another; even befriending a weasel for a pet was too much for us (OK, to be fair, that was me, again

). But hey, at least it was a laugh
