Alex Turner - Piledriver Waltz

"I etched the face of a stopwatch
On the back of a raindrop
And did a swap for the sand in an hourglass"
This kind of gives the listener the idea of nothing lasting forever. Everything is as delicate and everlasting as a raindrop. It gives the idea of urgency and time running out. Everything is limited.

"I heard an unhappy ending
It sort of sounds like you leaving
I heard the piledriver waltz
It woke me up this morning"
He can see that she's going to leave and they will not have their happily ever after. "piledriver waltz" may just be an oxymoronic metaphor to describe roadwork outside his house. I like the idea of the contradicting images of a loud brutal piledirver and soft delicate waltz. 

"You look like you've been for breakfast at the Heartbreak Hotel
And sat in the back booth by the pamphlets and the literature on how to lose
Your waitress was miserable and so was your food
If you're gonna try and walk on water make sure you wear your comfortable shoes"
I feel like this one is about her body image issues? which may just be an interpretation that is too literal. "pamphlets and literature on how to lose" weight? her food was miserable because she can't bear to eat it. the first line links this back to her relationship. her inecurities might be getting in the way of the relationship. she can't lover herself and therefore can;t love the singer of the song. "if you're gonna walk on water wear comfortable shoes" sounds like him telling her don't try to be perfect because that's impossible.