Previously in this series: Dirtbag John Milton.  BIFF enters, skateboarding. BIFF: more like willy blowman BIFF exits, skateboarding. LINDA: oh Biff when are you going to make something out of your life BIFF: i went on a job interview today LINDA: that's wonderful how did it go? BIFF: stole a pen LINDA: oh Biff BIFF: s'a good pen [BIFF leans over and carefully draws a mustache over LINDA'S mouth] BIFF: see…