racedar

The gift/abilty of being able to tell what ethnic background a person is from, simply by looking at them.

Mary: "Peter, what country are you from again?"

Veronica: "Why, he's half Italian, half Salvadorian, with a little bit of Irish."

Peter: "How could you have known that?"

Veronica: "I am a tank; I have awesome racedar, duh."