It’s the Friday before Memorial Day. That means it’s both time to break out the summer music and to play a song I always play this weekend. Two songs, actually. “Jack & Diane” – John Mellencamp Years ago, when we were still lake people, one of my better Facebook posts was something along the lines of “It’s not Memorial Day weekend until you’re drunk at the lake and you hear ‘Jack And Diane.’” We don’t have a lake house anymore. I don’t really get drunk, either. But we can still listen to Mellencamp to kick off the biggest weekend of…