I don't know what it is either.
and I'm intrigued enough to Google for this

Wikipedia makes it look awesome
( Thinker, Wed 18 Jun 2008, 14:41, archived)

YOU NINJA'd!

( Elvis of Nazareth This isn't a sig, it's a fucking liberty., Wed 18 Jun 2008, 14:44, archived)

You noticed?
I must get better at this ninja-ing lark.
( Thinker, Wed 18 Jun 2008, 14:50, archived)

WOAH
"Merging with or becoming objects"
(__, Wed 18 Jun 2008, 14:48, archived)