Having hard poop slowly come out of your anus and gradually get bigger until it is too heavy for your anus to hold.
Jonny had a huge poop-erection after eating 3 banana's.
Rubbing alcohol figures into the origin of this expression; but the essence of what this word has come to connotate are people who seem to live as an underclass by choice.
People who remain consolidated in their poverty; laying aside all else.
People without self and other respecting values, as a long-term choice of being in poverty; probably for generations. It's a "code" of being. It is a choice of being. Unchanged by all social policies to help. A rubby is someone who chooses to be in ill health; ignorant; and endlessly having children--despite knowledge and availability of birth control. Owning cars/dogs, etc. which they can neither afford nor maintain.
I can't imagine the landlord has accepted so many rubbies into our building. It's awful. They bring in their dogs, boyfriends, children.
I can't believe you are going out with such a rubby guy. I hope you didn't lend him money.