One time, I was doing groceries in LA like every other weekend. I was going to get a can of pesto sauce on the other end of the aisle. Not feeling like dragging the cart all way to the other end, I left it on one side while walking all the way down for the pesto. It was then I heard a lady shouting. "Whose cart is this? Miss, is this yours?" I nodded. The lady threw me a firm gaze and told me not to leave it unattended as it was dangerous. I had a spitting thought of “So what? That's my cart. You've nothing to do with it.” but instead, i was flustered and begrudgingly walked to my cart, not to leave it ever again.
That case was one out of many things I encountered while living in US for years. Simply put, Americans are so blunt! In a good way. But this then-timid Indonesian student was so shocked when someone walked by to compliment her shoes or jacket. Or the other day I was having my loads of items scanned at the register at Target, and the cashier went “Oooh are you having a party tonight? By the way I love this noodle brand. Great choice!” Should this happen in Indonesia, you'd be suspecting the cashier might be developing a chronic nosy symptom. Should the scenario unfold here, we'd take it skeptically and be like “So, why do you want to know? You think you're getting invited? You're way inside my personal space so fuck off.”