My Broken-Hearted Valentine - S3-E18
Other mistake: When Steve is wearing his Cupid costume and waiting for Laura in the Winslows' living room, the doorbell rings. He is obviously excited and ready to pose before seeing Daniel there. This does not make sense because Laura would not ring the doorbell to enter her own home. In fact, she does not ring it when she does arrive shortly after Daniel.
Plot hole: The Winslows' younger daughter, Judy, disappeared from the show in 1993 (halfway through the series' run) with no explanation.
Hot Wheels - S4-E12
Continuity mistake: Laura meets a guy named Ted supposedly for the first time. He is selling candy bars around the neighborhood and happens to knock on the Winslow family's door. Laura goes out on a date with him. However, Ted and Laura have already had several interactions, and have already dated and broken up in previous episodes in season 4.
Suggested correction: This is because the episodes were aired out of order. "Hot Wheels" was the 2nd episode produced for season 4 (production code 447802) and aired following the 15th and 13th produced episodes.
It Didn't Happen One Night - S5-E2
Other mistake: When the folding bed contracts after Laura turns the lights off, it's very obvious the two legs sticking out from the bed are fake or that of a mannequin.
Rock Enroll - S5-E13
Visible crew/equipment: When they are singing happy birthday to Steve near the end of the episode, a crew member can be spotted in the top right corner walking past an open door. (00:20:55)
Rock Enroll - S5-E13
Visible crew/equipment: Towards the end of the show when they bring the cake out for Steve a crewmember walks past on the right of the screen.
Revealing mistake: When Carl, Steve and Mr. Looney first get locked in the bomb shelter and the door slams shut you can see it bounce back slightly. It doesn't stick closed.
Sink or Swim - S6-E8
Other mistake: When Carl is trying to teach Urkel how to swim in the pool, the pool signs say 4ft and 6ft. But if you notice, when they stand up, the water is only at their wasteline. Obviously, Carl and Urkel are not 8ft tall or anything. So they are not standing in actual 6ft of water.
We're Going to Disney World (1) - S6-E22
Continuity mistake: In an earlier episode, Steve told Carl that he has to take charter flights because he was banned from all commercial airlines. Yet, in this episode, he takes a commercial airline to Florida.
Continuity mistake: During the scenes where they play Mortal Grandma (or whatever it's called), the characters' health bars don't change.
Continuity mistake: Carl tells the establishment's owner that Eddie and Waldo are under the age of twenty-one. However, in the episode "Best Years of Our Lives" (also Season 7), Waldo tells Maxine that he worked on a parade float every year in high school, which makes seven floats. If he failed three grades and started college in the previous season (with Eddie), he would be at least twenty-one years old by now - probably twenty-two.
Dream Date - S7-E22
Continuity mistake: Laura says that Steve asked her to be his prom date when they were six years old. In other episodes, she has mentioned that she first met him as a blind date - their date in the first season.
Dream Date - S7-E22
Other mistake: Steve and Laura kiss at the prom, and the moment is never mentioned again. In fact, during the Season Nine episode "Drinking and Jiving", Steve is surprised when Laura kisses him passionately, while she is drunk. He is surprised enough to mention it the following morning and offer to start a relationship (then Laura pretends that she doesn't remember).
Continuity mistake: Carl says that Laura was five years old when the movie "The Wiz" was released, which was in 1978. That would mean Laura was born in 1973 and is or will be 24 years old. She only finished high school in the previous season.
Who's Afraid of the Big Black Book? - S9-E5
Continuity mistake: Eddie's birthday appears to take place during the spring or summer. But the episode "Son" showed that he was born in January.
