"Who's Sorry Now?"

Tannis G. Montgomery returns, after "three years," as Arlene Nestrock.  We see some of the Love American Style episode in flashbacks, and I guess Richie is retconned to thirteen or fourteen there.  (It would've been more plausible, and accurate, to say two years.)  Although Richie has gone steady before (including with another Arlene), he doesn't like this Arlene's clinginess.  The scene of Richie trying to horrify Arlene's parents by his Fonzification is one I vaguely remember from syndication, although in this case I'm going to argue that it might've been funnier further into the run.

We are starting to see a nerdier Potsie now, no longer boasting of his nonexistent success with girls.  For instance, he got gum in the ear of a girl named Rita DeFazio, who may or may not be related to Laverne.