is the 18th episode of the fourth season of the animated series Family Guy , which originally aired on December 18, 2005. Written by Danny Smith and directed by James Purdum, the episode explores themes of religious identity, father-son dynamics, and pop-culture idolatry. Plot Summary
The episode is noted for its sharp critique of organized religion and its satirical take on modern "fad" spiritualism. Key elements include: The Father, the Son and the Holy Fonz - IMDb
Peter establishes the , where the congregation treats Happy Days scripts as sacred texts and wears leather jackets as religious vestments. While the church initially attracts a following, it eventually dissolves when members are lured away by other celebrity-centric faiths or traditional Christianity. Themes and Cultural Satire
The narrative begins when Peter’s devoutly Catholic and overbearing father, Francis Griffin, visits Quahog and discovers that the youngest Griffin, Stewie, has never been baptized. After Francis attempts to baptize Stewie using tainted holy water, Stewie contracts a severe infection and is forced to live inside a sterile, germ-free plastic bubble.