Original air date: September 30, 1999
Peter's Bible-thumping father, Francis, comes to visit, making Lois feel bad for being Protestant (since Francis is Catholic), Meg feel bad for having a crush on Joe's son, and Chris feel bad for pooping in the bathroom (which Francis mistakes for masturbating).
Tropes used in the episode:
- A Date with Rosie Palms: Parodied. Francis thinks Chris spends all his time in the bathroom masturbating, when he's really just... going to the bathroom.
- Adam Westing: Patrick Warburton voices Superman during the Hell cutaway. This is a nod to Warburton voicing the character for a Jerry Seinfeld commercial for American Express in 1998.
- Badass Grandpa: Francis becomes a bodyguard for the Pope, even punching hard a FOX camera man.
- Biting-the-Hand Humor: Francis denouncing the FOX camera man as a heathen and punching him out.
- Bowdlerisation: On Channel 4's website in the UK, the title of the episode becomes "Holy Cr*p"
- When that same channel broadcasts the episode, they digitally erase the word "Whore" from the sign that Francis tacks on below the "Just Married" sign, so Francis' sign becomes "to a Protestant"
- Calling the Old Man Out: When Francis berates him at work, Peter stands up to him in a civil manner. His response is to fire Peter.
- Comically Missing the Point: After hearing Francis' stories, Stewie becomes awed by God because he believes he's evil.
- The Dutiful Son: Peter is so completely devoted to and forgiving of Francis, much to the confusion of everyone who meets Francis.
- Early-Bird Cameo: Vern, the vaudeville performer who would appear often early in the revival. He does his routine without his piano-playing partner Johnny.
- Escape Pod: The family uses one when Peter's mother comes knocking.
- Hidden Heart of Gold: Well, very hidden, but it's there. The ending demonstrates that Francis loathes much of Peter's lifestyle, but he sincerely loves him.
- Innocent Innuendo:Diane: Tom, the city of Boston is examining its conscience tonight in preparation for a visit from the Pope.
Tom: That's right, Diane. I'll tell you what else will be examined: This cock. (pulls up a rooster) The Rhode Island Cock Society is sponsoring free check-ups for this year's Cock Awareness Week. Don't know why they went with such a suggestive name when they could've just as easily gone with "rooster."
- Mundane Utility: A cutaway shows Jesus using his amazing powers to win at golf.
- Noodle Incident: "Lois, lunch is a sin. Taking a break is a sin. Bestiality is a sin. I don't know how that one came up, exactly."
- Obnoxious In-Laws: Francis to Lois.
- Potty Emergency: Chris spends the entire episode not going to the bathroom after Francis assumes he spends all his time in the bathroom masturbating and tells him what he does in there is a sin.
- Racist Grandpa: Not that Francis voiced anything against different races and ethnicities, but he has a low opinion of other religions and ways of life, like Peter's non-religious lifestyle and Lois's Protestantism.
- Screw This, I'm Outta Here!: The family flees the house rather than have to put up with Peter's mother.
- Sentimental Music Cue: Parodied; Peter has an orchestra on standby in case an emotional sitcom moment occurs.
- Slut-Shaming: At Lois and Peters' wedding, Francis tacked a sign reading "to a Protestant Whore" under the traditional "Just Married" sign.
- Years later, he tells Meg she'll go to hell for even holding Kevin Swanson's hand and tells Chris the same thing for supposedly masturbating.
- Tap on the Head: Parodied. When Peter steals the Popemobile, the guy guarding it tells Peter that "even the slightest tap on the head knocks me out. I always wake up feeling fine afterwards, but it's just so darned inconvenient." The fellow then demonstrates this by lightly touching his head and knocks himself out, allowing Peter to steal the car.
- Ungrateful Bastard: Francis, full-stop. No matter what Peter tries to do to bond with him, Francis disregards him. When Peter manages to get him a job at the toy factory, Francis thanks God while giving Peter the whip.
- Waxing Lyrical: Parodied after Francis walks out on a baseball game Peter invited him to.Peter: All I did was ask him to buy me some peanuts and crackerjack.
- We Are Not Going Through That Again: At the end of the episode, after Peter manages to get Francis a job with the Pope, his mother shows up needing a place to crash. The Griffins' response is to jump into an Escape Pod and fly away.
- Workaholic: Francis. The episode starts with him getting forced into retirement, and he later leaves a ball game Peter took him to and breaks into a factory just to keep working. He's later shown to be hypercompetent enough to do Peter's entire day's work at the toy fact factory in seconds.
- Writing Around Trademarks: In the "Superman in Hell" gag, not only is he not called by name, his cards conveniently cover up his S-symbol.