Gary celebrates--and Wyatt despairs--when Gary's plea for fun classes is granted.

The boys get double the trouble when Lisa develops a split personality--one mild and one wild.

Chett's childish behavior causes Lisa to change him into a baby.

Wyatt visits his Grandma in a nursing home and is saddened that she isn't the same old Nana that she used to be. He asks Lisa to give Nana the spirit of a young person, which Lisa does. Nana becomes more spirited, but the new energy is coming from other people- she's sucking the youth out of everyone that she meets. Gary and Wyatt turn into old teens and have to find Nana and return her to the nursing home before they die of old age.

Phoebe, an old friend of Wyatt's, comes back to town. Both the boys think she's pretty hot and end up spilling the secret about Lisa to her. She then takes control of Lisa herself and has Lisa erase Wyatt and Gary's minds of the fact that they ever had a genie. Phoebe also becomes the host of her own daytime talk show, very similar to ""Sally."" The only thing that can help the boys remember is the fact that Wyatt keeps a daily diary-- I mean journal. The boys also get to be guest stars on an episode of ""Phoebe"" entitled Men Who Became Women Who Became Men Again.

In order to get Principal Scampi off of his back for a while, Wyatt shoots him with a buddy dart. The dart makes Principal Scampi Wyatt's new best friend. When Wyatt gets sick of hanging around with the principal, he decides it's time to break up the relationship. Principal Scampi then becomes Phantom Scampi. Phantom Scampi lives in Farber High and secretly protects Wyatt.

Mr. Donnelly gives Chett the boot and kicks him out of the house until he can find a job. Unfortunately for Chett, there's nothing that he's qualified to do. Wyatt asks Lisa to zap up ""A Man's Man's World"" and creates a monster truck-cigar-jerky-paintball store, since those are the only thing that Chett's any good at. Chett gets a job at the store, working for Mickey and Rhett, who strangely resemble rats. In fact, they are rats. Lisa accidentally turned Rhett and Mickey, two alley rats, into humans. The bad news is that the rats plan to wipe out the human race by using the plot from Invasion of the Body Snatchers. Chett, not really realizing what's going on, aids them in their quest.

Lisa zaps Wyatt out of existence to see what life would have been without him...and it doesn't seem too bad.

Gary, Wyatt, and Lisa all decide to go clubbing after hours and become ""creatures of the night."" Lisa turns them all into cool vampires, except the fact that they crave Yoo-Hoo instead of blood. Being vampires gives the guys new powers. They now have the ability to hypnotize people, which they enjoy using on cute women. The night turns out to be not so great when they find themselves with a real group of bloodsucking vampires. Principal Scampi and Chett are determined to stop the vampires and become vampire hunters.

Lisa gives the school a technological upgrade to fufill Wyatt's wish. Unfortunately, Gary and Wyatt end up in a bad sci-fi movie plot from the 80's. In this school, zombie teenagers are having their hormones taken away by Future Scampi. Gary and Wyatt are considered outlaws and are hunted down by the team of hall monitors that Scampi has assembled.