City ham is a term used in some parts of the United States for any bougie, silly man, lightly cured of distasteful behavior, which must be kept at a distance to preserve it. It is generally used to get "wet cured", that is injected with or soaked in a brine solution containing high concentrations of salts.
"So, Jamie, which one of your side meats was that? Was he the sausage you were bragging about the other day?"
"No, just a City Ham, but he still makes for a decent snack."