Homer's Paternity Coot

The episode guest stars William H. Macy and Joe Frazier as themselves, and Michael York as Homer's new father, Mason Fairbanks.

It is from her old lifeguard boyfriend, whose name begins with an M, who writes that if Mona replies to the letter, she has chosen him, and if she does not, she is choosing to stay with her husband, Grampa, but he believes the baby she is carrying is his.

He takes the Simpson family on a ride on his ship and tells them the story of the lost emerald treasure of Piso Mojado, which impresses them.

Later, while Marge, Bart, Lisa and Maggie have an awkward visit with Grampa, Mason and Homer are underwater in individual submarines salvaging the lost treasure.

Grampa reveals he switched the labels on the DNA samples after seeing how happy Homer was with Mason, and the duo share a hug.

[4] Brendan Dando and Guy Davis of the podcast Four Finger Discount gave the episode a positive review, particularly Michael York's performance as Mason Fairbanks.

[8] Simpsons writer and former showrunner Mike Reiss openly acknowledged that he had ridden on the same submarine and also claimed he had concerns about its technical issues.