Right, well. This idea has been laying around for a long time, so rather than try to make a massive, all-inclusive list, I might as well make it a sticky and let people add to it themselves.
--INJOKES--
<ol>
<li>
Vulture -- Vulture was an old spammer of days gone past. A great deal of his posts consisted of only "indeed," "i see," or "bagaga!" and through this he managed to acquire a mind-boggling number of posts. Today he is still considered the spammiest of RPGWW spammers, though his style of spamming is now discouraged.</li>
<li>
indeed -- See above; has spammy connotations.</li>
<li>
bagaga -- A word Vulture introduced to the board. It's a slang for banana or penis.</li>
<li>
spagoogle -- A word that KingOfDoma introduced to the board. It doesn't mean anything.</li>
<li>
sk0rx -- Same as above, only introduced by SuperRube.</li>
<li>
"RACISM!" -- A real life injoke started by Nekogami/pd Rydia, which has made its way into chats and the board. Used ironically or in response to discrimination of
any kind.</li>
<li>
benkui -- Reportedly Japanese for "a distant flushing is heard." Used in chatrooms when someone has to run to the bathroom; introduced by Nekogami.</li>
<li>
ninja -- See
http://www.realultimatepower.net.</li>
<li>
ninja burger -- An RPG and online comic. See
http://www.ninjaburger.com.</li>
<li>
snersne -- A typo of "sense" made by a lamer in a RPGWW chat one day; is used to mean "sense" and to ridicule lamers.</li>
<li>
marrow and yaoi comics -- Above lamer wanted to make a webcomic, and wanted to know how. Chatters told him he needed marrow and yaoi. He asked where he could get them.</li>
</ol>
More coming later and/or as people add them. <p>
<span style="font-size:xx-small;">-=- "Got Dragonale?" -- Richard Storm (Nakibe)
-=- "Bah, my past was full of drinking and polymorph spells." -- Hakaril (Archmage144)
-=- "I REJECT YOUR PRESENCE!" -- CaptainPervy (UnclePervy)
-=- "What. In. The. @#%. Are. You. Two. Doing?" -- Hzar (Banjooie)</span></p>