Graham Cracker ""So I was walking down the street today..."" ""Margret, would you like some raw toast with your tea?"", Sally interrupted. ""Why, yes, thank you--So, as I was saying, I was walking down the street, minding my own business, when a very impolite Africa American approached me and demanded my purse."" ""Give up dat' purse, Crack'a"", I believe was the vernacular the young man used. ""So, anyway, you know, I just won't stand for that Willy-Nilly sort of thing."" ""Of course not"", Sal…