"Do it again" by Steely Dan starts with the following verse:
In the mornin' you go gunnin' for the man who stole your water
And you fire till he is done in but they catch you at the border
And the mourners are all singin' as they drag you by your feet
But the hangman isn't hangin' and they put you on the street
The following chorus is repeated after each of the three verses:
You go back, Jack, do it again, wheels turinin' 'round and 'round
You go back, Jack, do it again
Second verse:
When you know she's no high climber then you find your only friend
In a room with your two timer, and you're sure you're near the end
Then you love a little wild one, and she brings you only sorrow
All the time you know she's smilin'; you'll be on your knees tomorrow
Finally, the third verse:
Now you swear and kick and beg us that you're not a gamblin' man;
Then you find you're back in Vegas with a handle in your hand
Your black cards can make you money so you hide them when you're able
In the land of milk and honey you must put them on the table
What, exactly, is "it"? What does Jack do again? Is it the thing named in the previous verse - i.e. the guy kills again after he gets off for the first murder, continues to be in relationships with women he knows are bad for him, and continues to gamble after swearing it off?