Lyric discussion by getborngetwarm 

My thoughts on this:

The title could mean living in the Subterranean underground, missing not home because that Is his home, but missing a safe place perhaps from a childhood memory or something, and of course this life-style is difficult and bringing him down (giving him the blues).

As for the medicine Johnny is mixing up, I believe he's referring to cocaine. One of many cocaine withdrawal is a nasty cough, which is why the coughing cop wants to interfere with the main character's hookup. The cop shows his authority with his badge and suggests that unless he is given the cocaine, he will rat him and Johnny out in order to get his job back because he's laid off. No matter what the main character does, he loses. He can hand over his dealer Johnny and the cocaine or he can get in trouble with the law again. They both sucks, it sounds like. He's always a dollar short.

I agree with previous explanations about the second stanza, except for the final verse. I believe the wind blowing is referring to the direction of the crowd. Since he's trying to keep his nose clean and stay out of plain site, the main character needs to blend in with his surroundings. I think it's suggesting that it's not difficult to know on your own what's hip and to follow along with it. In other words, you don't need to ask others what's trendy, you can see it with your own eyes. The trends are everywhere like the wind is. The direction the wind blows is the direction the main character needs to go.

Same goes for the third stanza. I think the last verse means don't trust anyone else. Parking meters show how much time has gone by and for a guy like the main character here, time is important because he can't stay in the same spot for too long or trouble will come his way, just as it has at Maggie's and Johnny's place. So basically, know the time and stay in the crowd but don't get too close to anyone.

Let me know if the following makes sense, avoiding being a bum by chewing gum could refer to being employed. Gum is something you shouldn't swallow, just chew. In other words, jobs should be kept temporary and only to keep from living cold on the street. You want to keep warm by keeping a job but get born by not staying in one place for too long.

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