Ms. Mamma had a post the other day, in which she was sporting some stylin’ new shades. She mentioned that she almost didn’t buy them, because they were expensive, and she’s not rich. Immediately, my mind went to a ploop type graph, in which I show WHY I don’t buy expensive sunglasses. As you can see, I have tried a couple of times to own cool, sexy sunglasses, but it’s really not a good idea. I said as much to Ms. Mamma, and she replied that she is gifted in such a way that when she buys sunglasses, she keeps them as long as she wants to, unless her mom…