Here's the Wikipedia definition:
Liminality (from the Latin word līmen, meaning "a threshold") is a psychological, neurological, or metaphysical subjective, conscious state of being on the "threshold" of or between two different existential planes (.....) In the anthropological theories, a ritual, especially a rite of passage, involves some change to the participants, especially their social status.
The liminal state is characterized by ambiguity, openness, and indeterminacy. One's sense of identity dissolves to some extent, bringing about disorientation. Liminality is a period of transition where normal limits to thought, self-understanding, and behavior are relaxed - a situation which can lead to new perspectives.
So anyway, I probably should have phoned my Dad and said "You were right. LIMINALITY IS REAL!" But clearly that's not going to happen, so I did the next best thing and I ordered this T-shirt:
(from here, if you're interested in this or other posy, ironically faux-intellectual merchandise).
Well, me, as it turns out. I'm pretty sure they weren't intending this for waiting adopters, but - I've realised that for the time being, Liminal State is where I live. I might as well own the T-shirt. So: go, Bobcats, I guess.