The person who responded had a bunch of good points, but one thing they didn't specifically respond to, is how members of my caste (Brahmins, top of the heap) w

The person who responded had a bunch of good points, but one thing they didn't specifically respond to, is how members of my caste (Brahmins, top of the heap) would know how someone is NOT a brahmin. So if you aren't a brahmin, you probably haven't had the same childhood experiences of temple-going and specific rituals. If I really want to ferret your caste out, I might casually quiz you on this background, maybe even in the context of innocently joshing about, "hey, wasn't that weird our moms would make us do blah blah blah." And if you didn't respond right away with a story about how your parents did that same thing, I'd maybe start to become suspicious ... If you ever let slip that someone in your family got a job because they utilized an affirmative action program (called "reservations" in India,) it'd sound weird, and I'd get suspicious ... If I started a joke about how some brahmins are better than other brahmins (yep, that exists. I know because I am the best Brahmin.) and you seemed clueless about the typology, I'd get suspicious ... You do this enough times, I'm gonna cross you off my party list.