Almost the same feeling I got while learning differential equations last semester, but not quite. I experience it whenever I go to Chinatown in Los Angeles, or when I’m walking around Little India area around Long Beach.
It goes something like this: You walk into a shop, and people begin talking and talking in another language and you have no idea of what they’re saying. If they’re looking at you while talking and then giggling about something, wanting to know what they’re saying becomes first priority. I was once walking with a couple of friends around Chinatown looking for a hat (don’t ask). We entered a shop and after realizing that the cool hats were a bit too pricey, the shopkeeper started talking to us in mandarin. We didn’t know what to say, and looked at him all confused. We then realized that he was talking to his wife (also in the shop), but looking at us. What the heck were they saying? We will never know.