Still in the House of Yesterday's Tomorrow, the gang wake up after the storm is over to find the door leading outside has vanished, trapping everyone inside and forcing them to find another way out. They come across a toy room where Rapunzel, Eugene, and Pascal find to their shock everyone else has turned into kids.
Tropes in this episode:
- Attention Deficit... Ooh, Shiny!: When the group first discovers the nursery, Cassandra tries to keep everyone focused, but they almost instantly split up to play with the various toys in the room. When Lance and Cassandra become children, they naturally lose focus and tend to jump from interest to interest, usually losing Rapunzel and Eugene in the process.
- Bearded Baby: Shorty apparently has had his long, white beard since infancy.
- Both Sides Have a Point: Rapunzel believes in being nurturing when dealing with children while Eugene believes children need firm boundaries and discipline. They ultimately have to use the other's parenting style when Cassandra and Lance are in danger, and end up agreeing that both of their styles are valid. In any case, they both agree that not all kids are the same.
- Bratty Half-Pint: Cassandra becomes an unbearable brat (and it's implied she was like that when she was at that age) who bullies Lance and thinks she's entitled to do what she wants since she views Rapunzel as a Pushover Parent.
- Breaking the Cycle of Bad Parenting: Part of why Rapunzel tries to be nurturing is because she doesn't want to be a horrible mother like Gothel was.
- Calling the Old Man Out: While not directly related, Cassandra calls Rapunzel on being too soft when the latter tries to gently coax the former to leave the kennel. This is the push Rapunzel needs to put her foot down with Cass.
- Designated Parents: Eugene And Rapunzel get an early taste of parenthood when they have to deal with their friends turned into children.
- The Dog Bites Back: After putting up with Young Cassandra's brattiness and bossiness, Rapunzel finally puts her foot down and firmly commands the little girl to start listening to her.
- Fountain of Youth: A magical toy top, the Top of Time, turns Lance, Cassandra, and Shorty into children. Since the top reverses age in proportion to how old the victim is, Lance and Cassandra end up as young children while Shorty becomes an infant.
- Gentle Touch vs. Firm Hand: The main conflict, with Rapunzel as the soft one and Eugene as the strict one. The moral, of course, is learning how to recognize each kid's needs and strike a balance.
- Hoist by Her Own Petard: Cassandra mocking Rapunzel over her softness and bad parenting causes Rapunzel to finally put her foot down and assert her authority, causing Cassandra to submit.
- Jerkass Has a Point: Although it was a needlessly mean thing for her to say to Rapunzel, Cassandra's statement about how she and Eugene will make disastrous parents rings true, given they've proven ineffectual at barely wrangling the children. In fact, it rings so true that it provides the wake-up call necessary to make Rapunzel into a more strict parental figure.
- Kick the Dog: Young Cassandra derisively tells Rapunzel that she and Eugene will make terrible parents.
- Lame Pun Reaction: When Rapunzel, holding a teddy bear, calls Eugene "Fitzher-bearrr", Eugene answers that that is a dumb pun.
- Potty Emergency: One of the problems that delays reverting those turned into children back is Lance suddenly needing to use the bathroom.
- Previously on…: Since the group is still stuck in the Inn of Yesterday's Tomorrow, the episode starts with a reminder of what happened last episode.
- Pun-Based Title: Lance and Cassandra turn into kids? You're Kidding Me!
- Pushover Parents: Rapunzel's compassionate method makes it easy for Cassandra to exploit her attentive nature and run riot. But Rapunzel eventually puts her foot down after Cassandra mocks her.
- Race Against the Clock: Matthews informs Rapunzel and Eugene that they have an hour to find the Top of Time to reverse the age spell placed on the others or they'll be children forever. Eugene complains how these things always seem to have some arbitrary limit.
- Schmuck Bait: The magical top was secretly put into the room, and Cassandra of all people was baited.
- Tough Love: Eugene believes in setting boundaries for kids to keep them in line.
- Unusually Uninteresting Sight: Once everything is resolved, Eugene opens a door where a bunch of monstrous tentacles come out before shutting it in annoyance.
- Wham Shot: Matthews is annoyed at his two past failures to trap Rapunzel's group (the mirror and the Top of Time) and promises to his unseen master he won't fail again. When he closes the door, it shows an emblem of Zhan Tiri.
