Here is a link to the song:
The second line of the second verse is, according to the internet and my own ears:
We're the shaking gun in a service station line
You can hear it in the video at 50 seconds in.
I've never been able to understand this line. According to dictionary.com a "service station" is just a gas station or similar establishment. I don't see any relationship to guns there. Is there another meaning to one or more of these words- or perhaps an idiom somewhere- that I'm just missing? Or a reference to some cultural or historic event?