A person, usually female, who will not under any circumstances abandon their TiVO for another source of digital video recording.
They have multiple season passes active at any given time, have the hard drive filled to capacity at all times, and rarely allow family members access to the television for the watching of other non-TiVO events, such as football or video games.
TiVA: "Do we get to keep the TiVO?"
Rational Husband: "We cannot."
See also: McAbby, Jibbs.
Fan 2: Yes, that Tiva action was hawt!
Fan 1: I ship Tiva :D
Fan 2: Tiva are awesome!