Overtime
Willie Nelson & Lucinda Williams Lyrics

Overtime
The recurring theme of the song, indicating the amount of time that will pass before the singer is able to forget the person he is singing about.

That's what they all tell me
The singer is being told by others that he will eventually get over the person he is singing about, indicating that he is struggling to let go.

That's what they say to me
Reiterating the idea that the singer is being told by others that he will eventually move on from the person he is reminiscing on.

Your blue eyes, your black eyelashes
Describing physical features of the person that the singer is remembering fondly.

The way you looked at life
Not only physical features, but also indicating a certain way of living that the person had that the singer appreciated or found attractive.

In your funny way
Adding to the idea that the person who the singer is singing about had a distinct personality or way of doing things that was appealing.

I guess out of the blue
The singer is acknowledging that at some point, he will stop thinking of this person randomly or unexpectedly.

You won't cross my mind
Continuing the thought of the singer moving past the person he is singing about and not thinking of them as often.

And I'll get over you
The ultimate goal or outcome of the song - the singer will eventually be able to move on and forget the person being sung about.

Your pale skin, your sexy crooked teeth
A continuation of physical features of the person being remembered, indicating the vivid memories the singer has of them.

The trouble you'd get in
Highlighting a part of the person's personality that may not have been as positive, or at least created problems in the past, further illustrating the complexity of the relationship the singer had with them.

In your clumsy way
Adding more to the idea that the person the singer is singing about had a distinct personality or way of doing things that may have been seen as endearing or charming despite its flaws.