*gapes* *laughs* *shakes head* Huh. Wow. Let's see. The NPCs your characters are fighting could hypothetically conduct one. Gamers traditionally have a reputation for being too much in their fictional worlds. But that still doesn't happen. Unless it does, I don't know, but I don't think so. Certainly my experience has been very far removed from anything of the sort.

That is s surprisingly common myth. It stems from a few factors, onebeing that there is a type of monters call demons. They aren't actually fallen angels though. There was also some, ah, graphic pictures in the very early books, which helped contribute to the idea that it was a depraved game. Warlocks are a class who get their magic power from demons. Teiflings are a race who's ancestors made pacts with demons. Your character can be chaotic evil, which is pretty much what it sounds like. The thing is, this is really easy to avoid. In the group I'm in now, our characters have to be good, and can't be teiflings or warlocks. All you really need is a like minded DM and players. My group is made up of the nerds from my parish, so none of us have any interest in that sort of thing.