Generally, a term applied to someone who has experienced hunger and bad upbringing then overcame it and now looks down on people in that former situation. A greedy person. Some synonyms, words or similar expressions can be ingrate, greedy, stingy
"Unos Cubanos que vinieron en lanchas con la cola entre las patas ahora son bien muertos de hambre codones."
It means extremely poor. It can be an insult or a form of pejorative treatment towards someone, disqualifying them as a person in every way. Insignificant. In these cases in Colombia we use the expression in a single word : "deadof hunger". Also the expression "starving" means anxious to eat, affected by starvation, with a lot of appetite.