We Are Young by Fun. Maybe I'm weird, but what I got from the song was that the guy is in a bar, stalking and creeping on his ex, who he has beaten, and hoping she gets drunk enough to go home with him. Gross. You know what's going to get lit on fire, honey? Your apartment, after he kills you and is trying to hide the body.
The sad part is, its such a catchy song and I usually turn it up when it comes on