So I'm white Caucasian female, but I am fluent in Mandarin Chinese and English. Now, looking at me, you wouldn't know I can speak Mandarin, which is why I find it absolutely hysterical to mess with people when they come through my line speaking Chinese, and I understand every word their saying. My co workers find it especially hysterical.
Okay, so the other day, this Chinese couple came through my line, and I asked them (in English) all of the questions about the bags and if they had their reward cards, all of that fun stuff.
Anyway, I started ringing up their stuff, and the wife said to her husband, "Tell her not to bruise the bananas," in Chinese, and I didn't say anything. The wife said, "Tell the stupid girl to go faster," in mandarin. I smiled at her and pretended like I had no idea what she was saying.
She kept commenting on how my hair was like a boys (I have short hair, it honestly not even that short) and how her grandfather would have gone faster than I was going, all of this is in Chinese.
And then, she said, "Make sure she doesn't forget the water," in Chinese, and then I replied in English, "I won't forget the water."
And I watched with enjoyment as a look of sheer terror spread across her face, as she realized I understood everything she had said before. She just stood there with her mouth hung open and her husband said (in Chinese), "This is why you shouldn't trash talk employees while their standing right in front of you." And I replied, "He's right."
They paid, the husband apologized, and left. After they walked out the door my manger and co worker and I were laughing so hard, even though being a cashier sucks, it sometimes makes my day a little brighter when something like that happens.