Brain forgets where he has hid an egg for an Easter egg hunt. He, D.W., and Bud venture into his brain to find it.
Tropes for "Brain's Brain" include:
- Bookends: The episode has a little challenge for the viewers to bookend it. At the start, as Arthur and Buster have differing memories of something they did, five objects appear in the background during their conversation. Arthur then challenges the viewers to remember what those objects were, and at the end of the episode, he recaps them for the viewers.
- Brick Joke: Midway through the episode, Brain resolves a dispute over if he should have a cookie or not. At the end of the episode, he's eating a cookie.
- Call-Back: Paintings of scenes from "The Contest" and "Friday the 13th" appear in Brain's memory.
- Recycled Animation: The sequence of Bud pressing buttons to morph Brain's face is repeated twice with no differences.
- Visual Pun: Brain's "hippocampus" is run by a female hippo.
Brain wants to see a meteor shower.
Tropes for "Brain Sees Stars" include:
- Helping Granny Cross the Street: Brain wants to get to the meteor shower, but he has to help an old lady cross the street.
- Paying in Coins: After Helping Granny Cross the Street, she insists on tipping Brain in coins.
- Sick Episode: Arthur is supposed to help out at Brain's ice cream shop, but he catches a cold the day before. Brain is forced to appoint Buster as his replacement instead... although Buster gets a cold too. He shows up to work anyways, and Brain's mother tells him to leave.
