Principal Prickly is hypnotized to think he is a little kid again. Hilarity ensues as everyone tries to get him back to normal.
The school gathers in the assembly hall for a hypnotism show, to which no-one is enthusiastic about The Amazing Jeffrey calls for a volunteer, but no-one volunteers. He chooses Miss Finster for his trick, asking her how old she is. She refuses to say, so he chooses 25, and tells the audience that he will hypnotise her into believing that she is a child of 6. As he carries out his trick, Principal Prickly finds himself being slowly hypnotised. After the trick, Jeffrey asks Finster how old she is, to which she again refuses to answer. However, Prickly answers "I'm 6, but I'll be 7 in June!"
At recess, the gang mock Jeffrey's failure. Meanwhile, Jeffrey demands payment for his act, but Finster refuses. Prickley then runs out of the school, and starts running around the playground, acting like a little child. Gretchen correctly deduces that Jeffrey accidently hypnotised him instead of Finster. Gus tries to tell someone, but T.J. insists that this is a golden opportunity to have things their own way for a change. However, Randall overhears, and tells Finster of what happened.
The teachers try to confront Prickly, but are unsuccessful. The gang then approach him, and convince him to act like the principal. At a teacher's meeting, Finster tells the faculty that The Amazing Jeffrey is unavailable, and self-appoints herself as acting principal. However, a disheveled Prickly storms in, and starts reading out a new set of rules in a child-like manner. Finster goads him into his office, before locking him in. Prickly finds his microphone, and starts burping and making armpit farts over the system.
As the teachers break their way into the office, Prickly climbs out the window and finds the gang. T.J. tells him that they will always be friends, but the others remind him that he cannot be a kid forever and that they have to turn him back. T.J. is reluctant, until Finster accidently broadcasts to the entire school that she will now be acting principal. The gang try to convince Prickly that he is a grown-up, but he becomes scared and tries to climb away from them. Gretchen follows him, and successfully hypnotizes him to bring him back.
In Prickly's office, Finster brings the gang in to face his judgement. However, before he can tell them their punishment, he is distracted by his picture on the wall, which he had drawn a red goatee on whilst in his child-like mind. When Finster tries to bring him back on point, Prickly lets them off with a warning, saying that "kids will be kids". Finster leaves with the kids, and T.J. thanks him as he leaves. Prickly then muses that he should grow a goatee beard, before taking a yo-yo out of his pocket, and playing with it as he looks out of the window, whistling.
- T.J. Detweiler - Ross Malinger
- Vince LaSalle - Rickey D'Shon Collins
- Ashley Spinelli - Pamela Segall-Adlon
- Gretchen Grundler - Ashley Johnson
- Mikey Blumberg - Jason Davis
- Gus Griswald - Courtland Mead
- Miss Finster - April Winchell
- Principal Prickly - Dabney Coleman
- Miss Grotke - Allyce Beasley
- Sam - Klee Bragger
- Randall Weems/Dave - Ryan O'Donohue
- Ashley Armbruster - Anndi McAfee
- Teacher #1 - Tress MacNeille
- The Amazing Jeffrey/Teacher #2 - Sam McMurray
- It's revealed that Principal Prickly is 50 years old according to this episode, and that his birthday is in June.
- This episode is similar to the Sabrina, The Teenage Witch episode "Little Big Kraft".
- In the episode's Italian dub, Principal Prickly thinks he's 3 years old instead of 6.
- Gus only has two lines in this episode.
- This was the only episode written by David Shane.
- Clips of this episode were shown as a sneak peek for the show's second season as part of Disney's One Saturday Morning on TGIF, which aired in primetime on ABC on September 11, 1998, one night before the episode premiered (This did not air in every ABC market).