I Get Nervous

I think this song is largely about modern paranoia in the digital age. A lot of LS songs seem to touch on that theme. "It's not inside my head, it's not inside my head" seems to have been omitted from the lyrics above (also in the liner notes of the record itself).

Basically I gather that it's speaking from the point of view of a Paranoid Schizophrenic, or it's a metaphor for intrusive thoughts being pushed into the mind by excessive media intake and over-stimulation.

"Those things they put inside me" could be referring to a chip or electronics that Paranoid Schizophrenics often believe has been implanted in them by the government. Could also be a general term for any sort of statement someone made to this person that cued them to think unpleasant thoughts. Diagnosed Paranoid Schizo's cannot be convinced otherwise... this is where "It's not inside my head" would fit in.

"Those things they put inside me" could simply be "Those things they said to me", "The way they looked at me", or just "Human interaction makes me nervous!"

Or the song could simply be about degradation of trust in humanity and it's role in our anxieties. Obviously, one of their best.