In the 1800s
An old sailor has nothing to do because his ship is immobilized in the harbor by lack of wind.
Gumming my taters and sucking my lime.
The last part is obviously against Scurvy.
You are right, I’ve situated it wrong.
It is in fact a consequence of:
“I’ve been round the Horn I guess two dozen times”.
By this he indicates that he has aged (and lost his teeth in the process):lol: