Adventures in Baby-Getting/References

Cultural references

 * The title is a reference to the 1987 comedy film .
 * Comic Book Guy mentions that the sinkhole is larger than the which swallowed  but is smaller than the  Battle Arena where  was beheaded by, all are references to Star Wars.
 * "Sink-o De Mayo," the news caption for the sinkhole, is a pun of.
 * Tissan is a parody of the motor company.
 * The shop Crouching Panda Hidden Egg Roll is a pun on the 2000 wuxia film .
 * 's "" plays when Father Mike appears. Lisa sang this in Sex, Pies and Idiot Scrapes.
 * When Milhouse says "This became treehouse of horrors," he refers "Treehouse of Horror" series.
 * "Fudgerama" is a pun of Futurama, another series created by Matt Groening.

Trivia

 * The opening sequence has been replaced with a variation of the short Homer Votes 2012. The changes are instead of Ned Flanders being deposited out of the tube next to Homer, Selma Bouvier is instead and Homer does not run and jump out of the window. The opening sequence is also similar to the "Treehouse of Horror XIX" opening sequence, which was about the.
 * The number plate on Marge's new car is PABF18, the production code of this episode.
 * Simpsons family from The Tracey Ullman Show shorts era can be seen buried underground, when the scene of moving water drop shifts underground.
 * The underground water cavern looks like (and drains like) a human bladder.
 * The credits were done in writing, the same writing style Lisa learned to write in this episode.
 * This is the second episode where an underground hollow area has caused part of Springfield to collapse. The first being "Who Shot Mr. Burns? (Part One)."
 * This is the second episode where Marge gets a new car. The first being "Marge Simpson in: "Screaming Yellow Honkers"."
 * This is the second episode where a slob's sperm leads to multiple babies resembling them. The first being "Selma's Choice."
 * This is the second episode which ends with Homer with someone resembling him. The first being "The Regina Monologues."

Continuity

 * Moe mentions the Springfield Monorail from "Marge vs. the Monorail" going out of control.
 * When imagining what Lisa is up to, Bart imagines Angelica Button from "The Haw-Hawed Couple" fighting Lord Evilton.
 * When Bart brings in Lisa's former boyfriends to help find out what Lisa is up to, he brings in Ralph ("I Love Lisa"), Nelson ("Lisa's Date with Density") and Milhouse.

Goofs

 * The sound of the water dripping into the cavern filled with water at about 02:24 into the episode sounds BEFORE the drop of water actually falls into the pool of water.
 * Rocks cover the holes at the bottom of the cavern when the water goes further into the ground, but when Marge's car falls in, the rocks have disappeared - the floor is flat.
 * The scene in which the vehicle covered up the sink hole has an animation goof. When it marks on the road markings, the marking in front of it has already been done and it isn't marking the road markings where it should be marking them. The animation corrects itself when the road markings are nearly done.
 * Richard moves from an aisle seat on the left of the school bus to a window seat on the right in about a second.
 * In this episode, Marge is shocked to find that Homer has a low sperm count, but in "Eight Misbehavin'," Marge already knows that Homer is sterile from working at the nuclear plant for years (which was also mentioned on season three's "Brother Can You Spare Two Dimes?")