I think that this song is about..somebody who feels like they're not good looking enough to dance with the girl they love . (My body is a cagewho keeps me from dancin with the girl i love) . but , if he would just believe in himself he would get her and that would be the solution . (but my mind holds the key) . but , he has doubt about himself and, his feelings . (I'm standing on a stage of fear and self-doubt)
It's about someone who feels trapped in his own body--crippled by his own fear. And he has to come to terms with his limitations and fears, and eventually learn to overcome them so he can be with the one he loves.