Eurogamer - I admit it. I used to type swear words into text adventure games.
A lot of the time I wanted to see what replies the author has reserved for potty-mouthed players. It would usually be something like "How rude!" or "Wash your mouth out!" One exception was a game called Quest for the Golden Eggcup where swearing would see you thrown into "God's dungeon" from which you had to escape.