The thing that drives me crazy is when I check out at the grocery store, department store, or almost anywhere, I'M the one who says "thank you" as the cashier hands me my change or my receipt. Shouldn't THEY be thanking me for shopping there? One of my pet peeves. I wholeheartedly agree with Ms. Gache when she says, "Casual conversation, casual dress and casual behavior have hijacked practically all areas of life."