Hablamay-dar
Having the ability to spot someone who can speak Spanish. Similar to gaydar. People who have a good hablamay-dar can differentiate between people from India, Phillipines, Thailand, etc., who look like they might have Spanish origins.
Dude, I feel like an ass, I just tried to speak Spanish to that bartender and he told me he was from India. Guess I don't have a very good hablamay-dar.