Goof: This episode leads the viewers to believe that Cliff was born in May, but in the episode entitled "Father's Day", Cliff says his birthday is in October.
After Cliff goes into the kitchen and sends the kids into the living room to see Russell, he mentions Russell to Theo, who says, "He's here? I'll go say hi." But Cliff just came into the kitchen and announced quite loudly that Russell wanted to see the kids. So shouldn't Theo have already known he was there?
During the scene where the twin sisters were singing their song, Theo was asked by Cliff to go to Peter's house and ask his mother if he could stay. Theo left immediately after this. But if you look closely while the twins are singing, you'll see Theo's arm in the scene. When the twins finish performing, they sit down. After this, you see Theo coming through the door after having just gone to Peter's house.
Naoka said earlier in the episode that she hadn't ever had a cookie because of her milk allergy and Cliff said that she wouldn't get one at their house. However, later in the episode, Cliff tells them all to go get a cookie and Naoka runs into the kitchen with the rest of them.
She was called Naoka in this episode (which is her real name), but in later episodes her character's name was Kim.
We later find out that the doorway to the far end of the bathroom is the main stairway...so they must have a room down there somewhere.
When Cliff wakes up from hearing Sondra and Denise blasting their stereo and runs to their room to shut it off, he runs down the hallway to his left, past the bathroom door, to get to their room. In later episodes, however, Sondra and Denise's room is depicted as being right next door to Cliff and Clair's room on the right side, across the hall from Theo's room. What happened to the extra bedroom?
Goof: When race ends and the kids are cheering, you can hear Denise call Cliff "Bill" instead of "Dad".
For guys who ran college track they sure don't receive the baton very well. Even I know the correct technique.
David Langston Smyrl later appears as Chester in "Mr. Quiet" and as Sam Lucas in recurring episodes of seasons two and three. Here, he portrays a noisy courtroom observer.
Once Clair finds out what the meal Cliff prepared was, she says she's going upstairs to get some of Theo's sandwich. Theo's sandwich has anchovies in it, and we later find out that Clair really hates anchovies.
In the court scene, Clair asks the mechanic about the engine's serial numbers and it is proved that had lied, Sondra asks, "What does all this mean?" How could Sondra not know what her mother's game plan was? Wouldn't she have told her as soon as she found out the serial number was fake? Maybe she wanted to keep Sondra in suspense.
Isn't it odd that Denise wanted Vanessa to improve her project, while Cliff was happy with her keeping the project the way it was? Cliff would normally be the one pushing his children to work harder, but not in this case.
Goof: As the scene in the kitchen changes from Rudy to her parents, back to Rudy, etc, the number of brussel sprouts on her plate go from three to one, then back to three again.
The scene where Clair puts the flower on Theo's lapel took numerous takes, according to Phylicia Rashad.
In "The Cosby Show: A Look Back" documentary, you can see some of these bloopers.
Theo is so independent that he has to hide his pierced ear from Cliff.
Towards the end of the show, when they're giving Cliff his Father's Day presents, watch Rudy. She is sitting on a chair behind the sofa towards the right. You can see Rudy pick her nose for a few seconds. After picking her nose, she wipes her fingers off on her pants!
Cliff says in the begining that he has the day off, but when the kids go shopping it shows him at work in his office.
It is daylight outside when Cliff and Clair are talking, but when he turns the lights off to try on his light-up Father's Day gifts, it gets pitch black in the room.
Goof: In the scene where Theo is talking to Cliff, Theo asks him to sign his history paper. However, Cliff gets so caught up on the fact that Theo received a B+, he doesn't even sign the paper. On top of that, Theo just walks off as if Cliff had indeed signed the paper.