A French-Canadian. French-Canada is popular for making cheese from the brains of goats. Hence, headcheese. {This looks like it might be an insult, but your editor doesn't recognize it as such.) Example: That Headcheese is looking mighty fine.
HEADCHEESE
Meaning of HEADCHEESE in English
Slang English vocab. Английский сленговый словарь. 2012