i think this song is about being emotionally damaged, about not being able to give yourself completely to another person, and feeling alienated and alone as a result. half the time he can, and half the time he only thinks he can. then there's the godfather, "the biggest train of all"; those lines seem to evoke suicide.
all of that said, there's also a great case to be made for this being about erectile dysfunction.
i think this song is about being emotionally damaged, about not being able to give yourself completely to another person, and feeling alienated and alone as a result. half the time he can, and half the time he only thinks he can. then there's the godfather, "the biggest train of all"; those lines seem to evoke suicide.
all of that said, there's also a great case to be made for this being about erectile dysfunction.