Anglo-Saxon, cheesedick male, usually from the South. Likely has never had a friend of another ethnicity, likely to vote Republican, and be a part of a fraternity. Historically, Johnny Cock Knockers have liked Dane Cook standup, cowboy hats, MMA, and really big trucks.
Danny: Dude, what happened to that Lisa girl you were trying to bang?
Me: I think she went back to Cincinnati and moved in with her Johnny Cock-Knocker ex-boyfriend.