I just read a news post on slashdot about Reiser4 FS was updated on SourceForge very recently and it seems that it is still being developed, even though Hans Reiser was convicted for murdering his wife. This news stirred up some very funny comments, which I will posts a couple off them here:

concealment wrote:

If you can find any name that's not related to murdering your wife, go for it. Bonus points if it's catchy.

Anonymous answered:

My vote for MRDRFS.

a reply from tobiasly:

REDRUMFS. As long as you don't use it for mirroring, no one will know.

A comment from serviscope_minor:

There's going to be a few off color jokes. May as well get started.
* It's a killer filesystem.
* My disk died. Was ReiserFS the murderer?
* It's more cutting edge than Reiser's knife.

Jeremiah Cornelius replied:

Kernel merge expected

in 20 years to life.

There are probably more jokes in the comments.