What does Twitter have against Star Wars? We’re not quite sure. But a list maintained by the social networking site of passwords you’re not allowed to use features that movie title plus many other familiar sci-fi words and phrases.

The taboo terms include:

batman

gandalf

matrix

ncc1701

startrek

starwars

superman

thx1138

In addition to the banned movie titles and character names, there are also more generic ones, such as:

dragon

merlin

monster

rocket

saturn

wizard

Why are these passwords off limits to Twitter users? It’s been suggested that perhaps the company detected attackers trying to hack accounts with them.

If you want to see a more complete (though definitely NSFW) list, check out PC magazine.