Context: A standard Safeway in an upper-middle class East Bay suburb of San Francisco, 8:30 PM PST. I just got home from the grocery store where I went to get a few items for my wife (vegetables, chicken) etc. and was getting my retired Dad a gift card so he can make ends meet. He is not doing well and living on Social Security and a part-time job, and I know he needs the money for food (and dog food). I was going through the self-check out but there was a sign "no gift cards" so I went back into...