I'm sure that this has come up here before, but please bear with me.
I still don't have all the episodes of the show, so it is possible that the Fonzie clip from City on the Edge of Forever refers to one of those eps, but someone who has them all told me that Fonzie never appeared before.
Is this true? Were the guys just messing with our heads, by referencing something that never really happened in an earlier episode?
I wouldn't put it past them.
Help!