Do-Si-Do

Help!  I'm having a flashback to junior high gym class, and yet, this is so unlike that.  When did square dancing trade do-si-do with "arrow?"  What's with the weird holding-the-face-and-rocking-back-and-forth thing?  Is it that 7th graders can alamande left better than 70-year-olds?  Since when do we square dance to The Black Eyed Peas?  It's all just so wrong.  I think it's an evil plot to make old people look foolish under the guise of dance and exercise.  When I'm old, I'm just going to sit in a chair and look out the window like I'm supposed to.