How Cory and Topanga Got Their Groove Back - S7-E18
Continuity mistake: Cory is walking around taking back flyers he'd earlier passed out. In one shot he grabs a flyer out of a young man's hand but in the very next shot, the young man is still holding the flyer. (00:08:57)
Continuity mistake: When Cory is "The Coconut Guy" he is showing Jay Leno, David Letterman and Arnold Schwarzenegger. When Topanga comes to the shop Cory knocks the Arnold Schwarzenegger coconut down but in the next shot, it is perfectly straight up. (00:12:04)
Poetic License: An Ode to Holden Caulfield - S6-E9
Continuity mistake: When Jack, Rachel and Eric are studying, Jack eats half his apple, then the three argue, and when it cuts back to Jack eating his apple, it is whole again.
A Long Walk To Pittsburgh (2) - S4-E17
Continuity mistake: When Topanga comes back to see Cory, for the whole period of time that she is there, sometimes her hair is dry and straight, and others it's wet and wavy. (00:07:12 - 00:21:16)
Continuity mistake: This episode is during Christmas time and it's Alan's birthday, but it was mentioned in "Honesty Night" that Alan's birthday is June 14th.
Continuity mistake: After Eric pulls the doll from out of the grill, he closes the lid. The lid then alternates between being open and closed throughout the rest of the scene. (00:03:44 - 00:06:15)
Continuity mistake: In this episode Eric said he was 8 months older than Jack, but in '5-17 And Then There Was Shawn', Jack said that he was older.
Continuity mistake: During this season when the kitchen door is open, from the living room you see a wall. In EVERY other season you see the actual kitchen.
Continuity mistake: Shawn steals some fruit just before the interview starts. He empties the whole bowl into his backpack. When the interview starts, the bowl is full again, with the exact same fruits that were just taken by Shawn.
Easy Street - S4-E12
Continuity mistake: In this episode Alan says that Eric woke him up on his 16th birthday to get his driver's license and it's a tradition for the men of their family to go with their fathers and get their license, however in season 1 when Eric does get his license, he says that Amy and Alan let him go off with Jason to get his license and there was no celebration.
I Ain't Gonna Spray Lettuce No More - S4-E3
Continuity mistake: At the beginning of this episode, Cory asks Alan for money for his class photo. When Alan asks what grade Cory is in now, Cory says 11th. However, at the end of the previous season, Cory had just finished 9th grade (he and Shawn are both 15) and he spent his summer traveling the country with Eric. He should be in 10th grade, not 11th. This is further complicated later in the season, when he turns 16 and gets his driver's license. If he was in 11th grade, he would have already turned 16 and gone through driver's ed.
Continuity mistake: After Topanga draws a lipstick heart around her face and Shawn says "Use a mirror, babe," a closeup is shown of Topanga smiling at Shawn and you can see Cory has lipstick on his forehead before Topanga has drawn it on him. (00:20:30)
A Very Topanga Christmas - S5-E11
Continuity mistake: When Topanga tries the egg nog, you can tell that there is nothing in the paper cup.
Continuity mistake: When Cory is getting food for Shawn, he's piling meat loaf onto his plate. There are three pieces, one on top of the other two, then they cut to a wide shot and back to a close up of Cory, and it's just one larger piece.
Continuity mistake: Just after Cory talks about being a "baby shower machine", Morgan walks past him. There's then a quick shot of Alan and then we see Cory again, and again Morgan walks past him. It's not the same shot from two different angles, as Cory is acting differently each time.
Continuity mistake: When Cory is lying on the couch during his argument with Topanga, the pink pillow is under his right shoulder. A few shots later, it is suddenly under his neck. (00:17:00)
Continuity mistake: After Topanga and Angela hug, Angela puts her hands on Topanga's arms. When the shot changes, Angela's arms are suddenly down at her sides. (00:18:27)
Continuity mistake: When Topanga is telling Cory that she had her internship interviews in the morning, her arms are folded. When the shot changes, her arms are down at her sides. (00:07:39)
Continuity mistake: When Cory is saying to Shawn "Are you going to nice yourself out of the girl you love?", Shawn's right foot is resting on his left knee, and his left hand is on the foot. When the shot changes, his left foot is now resting on his right knee, and his left hand is resting on his left thigh. (00:05:06)
Continuity mistake: When Cory enters the noir world and uncovers Topanga's corpse, you can see her left hand is draped over her stomach. After the noir version of Cory confesses to the murder, the cloth covering her body is now suddenly covering more of her torso, including the left hand. (00:17:53 - 00:19:15)
Chosen answer: In the present day, with the United States abiding by more stricter school health laws, for the most part this wouldn't be in school cafeterias as many cannot even have carbonated beverage machines now. However, in the 90s when the show takes place, it wasn't unheard of for there to be coffee machines in the cafeteria of small schools where the teachers eat with the students as we see them do often in the show. The idea being that the cafeteria was small enough so a teacher or hall monitor could catch a student before they could drink the coffee.