According to Ben from a few years back, one of the reasons they weren't getting signed was because he was too fat to be a frontman. Guessing that's what the song is about, but haven't listened yet.
Is that true? That seems boarderline ridiculous. Its sounds dumb, but tons and tons of fans fall in love with singers because of their voice alone, their personality/stage presence, and more shallowly because they're "famous".