Back when 'Tiegs for Two' was originally broadcast, there was a joke within the first two minutes that completely rubbed me the wrong way (not for the reasons you'd think) and it's what ultimately turned me off of Family Guy. Let's be honest, the pastures over at American Dad would prove monumentally greener.
Looking back on this after six years, it plays like a checklist of the show's half-ass writing; it leans hard into the non-sequitur humor, the characters exist to comment on the action ironically, and the celebrity name-checks don't make any sense. The only thing missing was the Conway Twitty play out to commercial. It's unbelievably lazy.
As for that one joke . . . it's a textbook example of how to screw up a Parkinson's gag. I know that Michael J. Fox has a sense of humor about his condition, and there are those jokes out there I'm sure would make him laugh (the squiggly signature on a contract, for example, we've all seen that meme); but here, Peter halts the show, explains why they're not going to show the clip, and then decides to show it. The joke's not funny, and neither is Peter's fourth-wall break to explain it. Look, if no one's off-limits in comedy, then you have to at least make it funny. When has that been too much to ask?
Again, that's only the episode's first two minutes, and it doesn't improve from there. This show clearly has a devoted fan base, but I'm not one of it. And this episode was as good a reason to bail as any.