GM: Suddenly an explosion is heard!
Ben: We draw our swords!
GM: And poison gas starts filling the room!
Jim: Oh God, it's Tomb of Horrors all over again.
Tomb of Horrors is one of the all-time classic Dungeons & Dragons adventure modules. It is, in the true sense of the word, infamous for being one of the most devious and impossibly difficult adventures ever written. Not only is it chock full of incredibly deadly monsters and unforgivingly lethal deathtraps, but in many cases the encounters and traps are triggered for no readily apparent reason, and cannot reasonably be avoided even by players exercising extreme caution. Anyone who has ever played this adventure has had characters die horribly in the Tomb.
You'd think this would make the Tomb of Horrors unpopular. On the contrary, it is regarded as one of the greatest D&D adventures ever published, which just goes to show you the mentality of many of the DMs who ran it. It's so popular that Wizards of the Coast revised it and released a version for 3.5 Edition D&D, which you can download for free to torment your current players.
Gabe: I ran the Tomb of Horrors last night.
Gabe: Somebody lost their arm in the first room. After that, it was four hours of poking things with sticks and throwing shit through portals! They left the table haunted and demoralized.
Tycho: Mission accomplished, then, for the Tomb of Horrors.
Gabe: I thought they'd at least have fun!
Tycho: You're thinking about the Tomb of Jet-Skis and Handjobs. That's not even the same tomb.
DM: Just a word of warning while you're here: Be careful around the Hall of Characters That Died Without a Saving Throw. A lot of the guys are still testy about the "Tomb of Horrors".
Gary Gygax: Heh, heh, oh, man, Sphere of Annihilation in the statue's mouth. That never got old.