To me it meant that many people have a facade, intentionally or not, and underneath that you'll find a person that is totally far from what you expected.
The song is by Five for Fighting and it's called Superman (It's Not Easy)
I can't stand to flyI'm not that naive
I'm just out to find
The better part of me
I'm more than a bird..
I'm more than a plane
More than some pretty face beside a train
It's not easy to be me
Wish that I could cry
Fall upon my knees
Find a way to lieAbout a home
I'll never see
It may sound absurd...but don't be naive
Even heroes have the right to bleed
I may be disturbed...but won't you concede
Even heroes have the right to dream
It's not easy to be me
Up, up and away...away from me
It's all right...You can all sleep sound tonight
I'm not crazy ...or anything...
I can't stand to fly
I'm not that naive
Men weren't meant to ride
With clouds between their knees
I'm only a man in a silly red sheet
Digging for kryptonite on this one way street
Only a man in a funny red sheet
Looking for special things inside of me
It's not easy to be me.
