This song is about detaching yourself from reality and allowing your stream of conciousness to flow. The random noises and instrumentals are fragmented and odd, just like lucid thought.
Right now for me this song's about being out of place. It sounds like a party or get-together you don't really want to be at. You feel uncomfortable, anxious, as if you don't know anyone there (yet you do), but you don't want anyone there to know. You're just sort of hovering around, pretending to enjoy it so no one thinks anything bad about you.
And Then Nothing Turned Itself Inside-Out [Bonus Disc] And Then Nothing Turned Itself Inside-Out [France Bonus CD] Mishmoshi-Moshi And Then Nothing Turned Itself Inside-Out