Star invites Buff Frog to the first ever integrated Cornball game between monsters and Mewmans, but things go awry when the teams for the match form along species lines.
- Just like in "Is Another Mystery", Katrina went behind her father's back in keeping communications with Star.
- While hanging out with Kelly in the announcers' booth, Marco briefly mentions the events of "Curse of the Blood Moon". Likewise, Kelly refers to him as her breakup buddy, the term she came up with in "Kelly's World".
- Calvinball: The game of Cornball is nigh incomprehensible to outsiders and has a lot of bizarre rules, including penalties for shouting out exes' names, and equipment including everything from basket nets to hula hoops. Marco has to put together a String Theory in order to figure out how the game works, but eventually he gives up because he finds it all too confusing.
- Children Are Innocent: The monster and Mewman children happily play Cornball together, not caring about the grudges of their parents—they were just bored that no game was going on. Buff Frog even says that while his generation is garbage, there's hope for the children.
- The Cynic: Buff Frog feels his whole generation, monsters and Mewmans alike, is just garbage and beyond saving.
- Deus Exit Machina: Eclipsa can't use her authority to weigh in on the game and ensuing riot, as she's distracted by constantly losing track of Meteora.
- Golden Snitch: Catching the cornball with a net is worth 15 points, which turns out to be game point for the winning team.
- Noodle Incident: Apparently Eclipsa had a talk with Meteora about preying on people that were weaker than her.
- Properly Paranoid: You never get anything past Buff Frog. If Star gives him free admission along with dozens of perks and gifts, he knows she'd have to have an ulterior motive and that he's being bought. It's not the first someone's tried this. The same could be said for his doubts over the new segregation between monsters and Mewmans which comes true when the two groups begin to fight each other.Buff Frog: Just because things are different, doesn't mean they are better.
- Running Gag:
- Throughout the episode, Eclipsa is stressing over Meteora who keeps escaping to wander the stadium.
- Marco facing difficulty with understanding the confusing rules and regulations of Cornball.
- Sequel Episode: To "Is Another Mystery"; after Buff Frog and his family moved out of Mewni, Star and Katrina organized the Cornball match to try and convince him to move back.
- So Proud of You: When Katrina points out that she's managed to keep her communication with Star a secret, Buff Frog says she'll soon be an even better spy than he is, and that he's proud of her.
- Straight Gay: One of the monster children dedicates a pass to his ex-boyfriend, David, who he still loves.
- Surpassed the Teacher: Buff Frog thinks it's a matter of time until Katrina surpasses him as a master spy since she managed to contact Star behind his back on a daily basis.
- Took a Level in Idealism: Buff Frog maintains that the adult Mewnmans and monsters have no chance of peaceful cohabitation, but becomes convinced their children do—and because of that he decides to move his family back to Mewni.