Love my superstitious games
Running circles round my brain when I'm left smiling
I love to steal this living steam
My head in someone's dream
I'm tired of sleeping
Call me crank, my idea
Crank, so super
Crank, my conscience clear
I build my canopy of steel
It fulfills my sense of real
A chrome protection [ Lyrics from: http://www.lyricsmode.com/lyrics/c/catherine_wheel/crank.html ]
Call me crank, my idea
Crank, so super
Crank, my conscience clear
It's clear
In this small partition, like a prison
Explode time bomb
If you know where I come from
You call me crank, my idea
Crank, so super
Crank, my conscience clear
Please call me crank, it's what I need
Crank, my mind in seed
Crank, my dream complete
Could be a reference to crank (speed), which is why the character exists in a dream, but cannot lay down or sleep.
Or, alternately, it could be the idea that he is a dreamer, a "crank" or nutjob, in other people's eyes, because he exists locked into his own dream world for protection. Or both.
The "small partition" could be his mind, his isolation, his solo dream, his insomnia, or a drug addiction. Or all of them. Alternately, it is definitely about an addiction to introspective isolation and living in a fantasy world/prison of one's own creation, whether or not drugs were involved.