After failing a magazine test on being a good father, Homer decides to help Bart out with his Soapbox Derby race car — and soon is left out when Martin gives Bart his race car (after crashing into a wall and getting sent to the hospital) so he can win against Nelson Muntz. Meanwhile, Patty and Selma get their hair styled.
This episode has the following tropes:
- The Alleged Car: The Little Lightning, the soap box car that Homer and Bart built themselves, at least compared to what all other children (even Nelson) are driving. And then again, the thing falls apart before it reaches the finish line.
- Alliterative Name: The VHS Village, formerly known as the Beta Barn.
- Bad "Bad Acting": In the Show Within a Show, McBain reacts to his partner bleeding out in his arms with something that sounds less like grief and more like mild annoyance.
- Blatant Lies: When trying to buy a product on TV over the phone, Homer at first says his credit card expired in 1989 but then says it expires in 2012.
- Doom It Yourself: Homer is not the greatest of the handymen.
- Epic Fail: Bart and Homer's Soapbox Derby race car doesn't reach the finish line.
- Martin's parachute only opens after his car crashed.
- Extreme Sport Excuse Plot: Bart decides this week to take up soap box racing and his dad decides to show he can be a good father by helping him. It really becomes "extreme" by showing Martin's literally explosive collision and Nelson's car being rigged with illegal weapons.
- Graceful Loser: Nelson once Bart beats him in the finals of the Soapbox Derby races.
- Insistent Terminology: Bart's Soapbox Derby role model is always referred to as "Three-time Soapbox Derby champion Ronnie Beck."
- Jerkass: Homer becomes this after Bart decides to drive Martin's car. He gets better at the end.
- Kick the Dog: This moment:
Homer: I don't know jack about my boy! I'm a bad father! [begins crying]
Selma: You're also fat!
Homer: I'm also fat! [resumes crying]
- Like Father, Like Son: Dave and Dave, Jr. at the National Fatherhood Institute. Also, when Bart ridicules Nelson for losing the race, Homer gladly joins in.
- Loophole Abuse: When Homer retakes the test from National Fatherhood Institute near the end, he takes note that the last question involves naming another father he's talked to concerning parenting. He decides to quickly ask Flanders when a boy should start dating... and leaves immediately as Flanders starts to answer.
Homer: (as he speeds off in his car) I talked to Flanders about parenting! I'm a perfect father!
- Man on Fire: The Honor Roller's crash leaves Martin on fire. Firefighters focus on the crash site, while Martin runs around screaming.
- Multiple Gunshot Death / Black Dude Dies First: Scoey, McBain's partner.note
- Oh, Crap!: Dave's reaction when Homer calls the National Fatherhood Institute and says he got a zero on their test.
- Retirony: Parodied in the McBain clip.
- The Reveal: Bart's hero, three-time Soapbox derby racing champion Ronnie Beck, turns out to be a kid that's younger than him and Bart was well aware of it.
- Reverse Psychology: Homer's brain uses it to convince him to use it to convince Bart to let him help with the Soapbox Derby race car.
- Serious Business: The championship race between Bart and Nelson is broadcast on local television, complete with one of the I Am Very British announcers who called the championship match between Bart and Todd Flanders on KBBL Radio in "Dead Putting Society".
- The song playing during Homer and Bart's montage of building the racer is Bobby Goldsboro's "Watching Scotty Grow".
- The title obviously riffs off Days of Thunder.
- The card taped next to the paternity test on the refrigerator is a Monopoly card.
- Skyward Scream: Arguably the show's most famous example:
- "Martin. I'll curse that boy til the day I die!"
- Smooch of Victory: After winning the race, Bart is kissed by a pretty lady (though he is clearly disgusted by it).
- So Proud of You: Homer responds to Bart's mockery of Nelson with "That's my boy!"
- Stylistic Suck: Little Lightning is a literal "soap box" car, in comparison to all of the other cars on the derby (especially the shuttle-looking Honor Roller).
- Take That!: Bill Cosby is treated kindly by the episode, though one piece of a dialogue was written as a knock on his criticism of the show.
Homer: God bless you, Bill Cosby! You've saved the Simpsons!
- The criticism likely dates back to Season 2 when Marge called Dr. Hibbert at home. That home looked suspiciously like the kitchen on The Cosby Show.
- Also, Cliff Huxtable tells Olivia to take off a Bart Simpson mask on his own show.
- Tempting Fate: McBain's partner mentions that once they take down the evil senator Mendoza, he's retiring in two days, when his daughter's graduating college, and he and his wife will sail around the world like they always wanted to in the aptly-named "Live-4-Ever". He then gets shot 17 times.
- Threatening Shark: While Homer's at the National Fatherhood Institute, a shark somehow gets into a tank and attacks a father and son in the middle of an underwater activity.
- Weaponized Car: Nelson's car has Ben-Hur-style Spiked Wheels that he uses to try to stop Bart at the climax.
- What the Hell, Hero?: Marge calls Homer a bad father when he refuses to go to the big race.
- Whole Plot Reference: The entire thing is a callout to an old Bill Cosby routine about soapbox derby racing.
- Wrongfully Attributed: For those more familiar with The Simpsons: Road Rage and The Simpsons: Hit & Run, then you'll be surprised to learn that Bart's signature vehicle in both games, the Honor Roller, is actually made for (and by) Martin. Initially, Bart is racing against Martin in a completely different vehicle, he only starts using it when Martin gets injured, and even then, he uses it on Martin's behalf.