Fanfiction-like works of original literature. Stories or novels bordering between being works of original literature and fanfiction of other literature.
Etymology: A double entendre for one of its prime examples, the novel series Twilight, criticized as being an original work of fiction with fanfiction-like refereces to pre-existing works most notably from Anne Rice.
a disease characterized by the uncontrollable urge to Facebook/Twitter/Blog/MSN/talk about anything Twilight-related. Sufferers are usually normal in appearance, but upon closer examination, faster heartbeat and dilated pupils can be observed. Sufferers will experience an increase in adrenaline upon any exposure to Stephanie Meyer material.
Dude, my girlfriend's got a total case of the Twilititous...she won't shut up about Team Jacob VS Team Edward and is constantly gushing about that stupid movie. she wants me to dress up as either a werewolf or a vampire the next time i do her. WTF. FML.