A space-age potion turns Urkel into Stefan Urquelle suave, smooth-talking life of the party, but Laura finds she soon misses the old Urkel.

The NBA's Larry Johnson plays Grandmama (his TV-ad alter ego), who becomes Urkel's new partner in a city basketball competition after Eddie dumps Urkel for star player Kenny.

At the drive-in movie, Laura's new boyfriend (Kevin Mambo) has trouble getting the message that no really means no; and at home, Carl just doesn't get it when his insults drive Harriette to retaliate.

Carl refuses to accept Eddie's story that he got pulled over for speeding ""because he was a black in a white person's neighborhood"" ... until the portly cop finds out the ugly truth. Meanwhile, Urkel tells Richie that he has nothing to fear when going to the dentist, but the nerd soon regrets his move when he has cavities of his own that need filling.

When accident-prone Steve is blamed for a chemistry lab explosion, Laura represents him at a school trial.

Carl bribes Laura to go bowling with Urkel and dreams that they are married with four kids who look like Urkel.

Urkel tags along on Carl's camping trip in Minnesota and an irritated Carl stubbornly refuses to listen to know- it-all Urkel's words of warning about bears and geysers; Harriette seeks a job.

Laura oversleeps and misses her bus to Cincinnati for a cheerleading competition and Steve offers to take her in his Isetta. Laura is not pleasant company and Steve confronts her about it.

The Winslows find themselves - unbelievably - indebted to Urkel after he saves Carl's life with CPR. The family showers him with gratitude and feels obligated to put up with the nerdy, annoying dweeb.

Laura and Eddie's romantic tips have obsessive Myra entangled in a web of errors with Urkel when she invades Steve's school; Carl's sage advice leads Harriette to a confrontation with her boss - and a possible layoff.

Harriette tries to fit in with Laura's friends but gets the cold shoulder from Laura. And Waldo's not so hot as Eddie's new hire at Mighty Weenie.

Carl and Urkel end up in the ring with the World Wrestling Federation's Bushwhackers after Urkel creates a ""snooze juice"" that knocks out the wrestling team's original opponents.

Laura believes that by donning a moustache and men's clothing she'll be better prepared to haggle with a sexist used-car dealer ; Steve is close to ruining Eddie's love life.

Carl shops for a toupee, hoping to turn Harriette's head. Meanwhile love struck Myra accuses Laura of trying to take Urkel away from her and the two get into a food fight.

Urkel tells Myra that he needs some space and ends up breaking her heart, while Maxine is ready to break Waldo's neck for acting like a jealous fool.

Laura pleads with Urkel to step back into his transformation chamber and bring back her perfect guy the handsome, cool, caring Stefan Urquelle. Freddy Jackson sings You Are My Lady"".

A thug named Bones pays Eddie a visit after Waldo and Weasel enlist Eddie in their football-betting venture.

Eddie changes his mind about college at a concert fund-raiser after singer Shanice performs a song he wrote; and Urkel has no luck rallying friends to celebrate his birthday, but soon finds that Laura is his biggest cheerleader.

Eddie becomes the laughingstock of the boys' locker room after Urkel spills the beans that Eddie is still a virgin.

Everyone applauds Eddie on his college scholarship except Waldo, who fears he's losing a friend. Meanwhile, Carl' s fear of failure could keep him from a job promotion; and Urkel tortures Carl into telling him where Myra is by showing him slides of his cheese-tasting trip.

Urkel and Carl are stranded on a stalled subway with a car full of grouchy shoppers. Urkle teaches everyone, including Carl that Christmas is a state of the heart, and can be celebrated anywhere and with anyone.

Urkel fears that his rejection has sent Myra to join a nunnery, so he enlists Eddie and Waldo to dress in habits and join him in a search for her at the convent.

Urkel's accident-prone Aunt Oona visits shy, dowdy woman who get a confidence-building makeover from Harriette and then takes her new-found confidence to a karaoke bar, where chaos erupts when she holds a singing contest.

Urkel develops hiccups after being robbed.