I once used Lord Hellz' signature thing 'I am the all-powerful and extremely good looking Lord Hellz' (or whatever) once and I claimed I produced that sentence on the spot from nowehere. I am ashamed of that moment.
Etymology: Old English
1: The bumping of long dead threads onto the front page. (Necromancy is frowned upon in both real life and in the forum and is usually only used by the most unoriginal or annoying spammers.)