opposite sides of the world collide at superstore

How is it that after a 12-hour day, and when I'm doing my dinner's grocery shop at 7:45 pm, I just happen to choose the line-up where the cashier doesn't know the difference between Brussels sprouts and kiwis?

After overhearing that error in identification (two people in line ahead of me), I realized that I might as well pick up that latest issue of People, and start reading. (Oh, the article about bad bridesmaid dresses.... priceless!)