Don't Fake This

Seeing as no one has really hit the nail on the head, I took the liberty to create an account here just so I can take this song apart and explain why it has to do with their father.

Ignoring A loss of sight Afraid to blink I might lose the sun

Hinting that they're losing reason ("sight") but their father ignores this. Yet still they try to take every opportunity they can to find their reason (the "sun"). The images of sight and the sun are metaphor relating to their light in life.

But don't Make this out To be more Than it isn't

Behind Every lie There's a Burden within

At this point the perspective is now in the eyes of their father. Thus showing that the father thinks they're being too ambitious and naive ("more than it isn't"). Then he explains that their life as musicians is a lie with too much of a burden for them to handle.

Yes, you're my son!

This line pretty much solidifies my interpretation. At this point the brothers have already disowned their father, but their father is still trying to force his existence onto them.

This suffering That's kept within Disposable men Lost

Now we go back to the perspective of the brothers. This is pretty self-explanatory in that it shows that they keep try to keep their suffering to themselves and that their father disposes them as if they are not useful and “lost”

Inside He was negative This place Once more was underground

This is one of the brothers (or all of them) looking inside themselves about their feelings towards it. Everything is “negative” but kept away hidden, or “underground”

So look And connect We’re refusing To rust

Healing Has To begin In the past

With the refusing to rust line, it shows that they are beginning to stand up to their father and his unsupportiveness. The healing line has to do with it being way too late for them to warm up to their father now.

So don't fake this Don't fake this Don't fake this Don't

This is pretty much the brothers saying they really are living and won’t accept their father’s disapproval or “faking” of their life.

Well this is still merely my interpretation, but I find it to be the most correct in that it actually links every single lyric together into a finished puzzle. Most of these interpretations only seem to last for one or two lines until there’s nothing else that really supports it.