The one time I was lucky enough to find a group of people wanting to play D&D (well, and not ruin the game) Anyways, he said his whole family played a game (cool) So my brother DM'ed and of the few things the players found was a bag.
now, whenever a player gets a sack they always think of 2 things: What's inside the bag, is it a bag of holding.. or is it a bag of devouring. These guys had never heard of the latter(I was shocked). They throw a few coins in and some such. Later in the game as they try to remove said items. "you hear a crunch as pain streaks through your arm. A second later you feel a strong pull on your wrist, trying to pull in the rest of you!" After a successful str roll the player freed himself from the bag of devouring. (angry at first but with reassurances that there are ways of getting one's hand back) we were off to play the rest of the game.
2 days later we call him up and ask when's the name game. Never was the answer. The parents heard about the 'bag of devouring' and banned us from thier house forever. :| I was shocked. Moral of the story? D&D to one man may not be D&D to another.
(another funny thing that happened when the game before the one mentioned above. We all had characters made up (mine a wizard, brothers a fighter) and the gm introduced the other characters to us by FIREING upon our charaters. The other people were riding a dragon too. Not to be taken without a fight my wizard unleashed some crappy spell that killed em all. I mean like, to the last point of damage was just enough to slaughter em. They got so pissed it was funny (and I'm not one to hide laughter very well) which only caused them to get angrier. All I could say was "a handshake is better than magic missle."