Elephants As Big As Whales

I thought it was about how someone can be away from you for a period of time, and it makes him go a little crazy. i love the way the chorus' switches

"Your face is a minor detail Elephants as big as whales

Your face is as big as a whale Elephants are a minor detail"

it makes it seem like he's trying to say the same thing he did at the start, but it'll never be the same when they're away.