Ceiling

I came across this song through http://filtermagazine.com/ and got trapped with the final chorus

we should be easy...

which may imply that the whole song is about how we can complicate ourselves sometimes instead of taking the easy path/solution...

I have problems awith English (I am not native) and "ceiling" in that context puzzles me...

Anyhow the song is uplifting while the video a bit disturbing...

http://www.youtube.com/watch?v=tPkGcKckjao