If a guy calls you a hogknoker what does he mean?

The term "hogknoker" is often used as slang, typically in a derogatory or humorous context, implying that someone is inept or foolish. It can also refer to someone who engages in silly or ridiculous behavior. The exact meaning may vary depending on the region or social group using it. Overall, it's not a flattering term and suggests a lack of respect.