Sam Harris describes a good case of cauliflower ear as a kind of bully repellent:
Gottschall: I would walk around, and I would feel this weird sense of repulsion toward the cauliflower ears, and I’d also be thinking, “God, I want one of those.” I do have just a little touch of cauliflower on my left ear that I’m very proud of. You can’t really see it, but you can feel it with your fingers.
Harris: That’s hilarious. “Hey, Buddy. Just feel my ear. No, not there, there. Yeah, right there. Want to take this outside? I didn’t think so.”
That got a laugh out of me, but, honestly, only people who train recognize cauliflower ear and what it means.
Cauliflower ear would seem to be the equivalent of the dueling scars that German fraternity men wore with pride in the 19th and early 20th centuries.