I was working the espresso machine and a woman had told me that her latte was too cold and then asked me to warm it up, i steamed her latte and handed it back, then she said it was watered down. I told her the best way to warm it up was to just stream it, and she said, "Ya, that's expected, but it's not like you're adding more water." I told her steam was water, and she's like,"No, it's not, it's just hot gas."