Rockin' chair money

Hi, I was wondering what is meant by the phrase "rockin' chair money." Hank Williams took it as the name of one of his songs.

Could be that now he is done "totin a gun" and wants to settle down.
Or maybe he just wants his baby love to join him in some rockin and a rollin'.

"I'll soon get my big check, baby
And then we'll have some fun
This rockin' chair money, honey
Is better than totin' a gun
Cause I love to rock, yeah rock
Baby, rock, let's rock on down the line"

Older individuals are often depicted as sitting in rocking chairs. Therefore, it could mean retirement money.